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GOLDARC RESOURCES LIMITED — Capital/Financing Update 2014
Jun 9, 2014
64961_rns_2014-06-09_413095e1-8e05-448d-976e-0a21a27036fd.pdf
Capital/Financing Update
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ASX RELEASE
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10[th] June 2014
CONDITIONAL ACQUISITION OF OPTIONS OVER GOLD PROJECTS
Highlights:
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Torian Resources NL has entered into a conditional heads of agreement with Cascade Resources Limited to acquire options over a number of prospective gold projects located in the Goldfields region of Western Australia
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Delivers on the Company’s previously announced strategy to generate shareholder value by acquisition
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Projects identified by Cascade via a detailed regional review and secured by strong relationships with project owners
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The projects host an existing Inferred JORC Resource of 115,227 oz Au
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Significant drill program planned to commence immediately following completion of the acquisition
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Technical and regional knowledge of Torian’s Board to be elevated with the addition of Mr Matthew Sullivan and Mr Andrew Sparke to a reconstituted Board
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Torian shareholders to vote on various resolutions to approve the acquisition at an Extraordinary General Meeting expected to be held following completion of satisfactory due diligence
The Board of Torian Resources NL ( Torian or Company ) are pleased to announce the execution of a conditional heads of agreement with Cascade Resources Limited ( Cascade ) to acquire the options Cascade holds over a number of gold projects located in the Goldfields region of Western Australia with an existing Inferred JORC resource of 115,227 oz Au ( Acquisition Options ).
ABN: 72 002 261 565 Unit 12 263-269 Alfred Street North Sydney NSW 2060 Australia Phone +61 2 9923 1786 Fax +61 2 9923 1371 www.torianresources.com.au [email protected]
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The Goldfields region of Western Australia has an extensive history of gold mineralisation with several multi-million ounce discoveries, numerous producing mines and the presence of some of the world’s largest gold exploration and production companies. The projects were identified by the technical team at Cascade Resources Limited through a combination of a detailed regional study, deep experience in the region and strong on-ground relationships.
Cascade’s technical team is led by Matthew Sullivan, an experienced geologist, who has lived and worked in the Goldfields region for over 25 years. Matthew is acclaimed for the discovery of a number of large gold deposits in the region including Kanowna Belle (6Moz) and East Kundana (3.5Moz).
Chairman of Torian Resources Nathan Taylor said “These projects provide an exciting opportunity for Torian Resources and this transaction is an important step towards our stated goal of delivering shareholder value by acquisition.”
Further detail in relation to the projects and proposed transaction terms are provided below and in the attached appendices.
Overview of Projects:
Torian has acquired options over 11 gold prospects in the goldfields region of Western Australia that comprise 4 key projects being the Taurus Project, the Mt Stirling Project, the Mt Keith Project and the Malcolm Project.
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Figure 1: Location of Projects - Goldfields Region Western Australia
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The projects host an existing Inferred JORC Resource of 115,227 oz Au across these 4 key projects.
| Total ProjectResources | Total ProjectResources | Total ProjectResources | Torian'sInterest | ||
|---|---|---|---|---|---|
| Project | JORCCategory | (assuming exercise | |||
| Tonnes | g/tAu | Oz | |||
| of options) | |||||
| Taurus | Inferred | 1,536,000 | 1.24 | 61,250 | 100% |
| MtStirling1 | Inferred | 259,750 | 2.44 | 20,400 | 51 - 90%1 |
| Mt Stirling Well2 | Inferred | 41,250 | 8.54 | 11,327 | 100% |
| MtKeith | Inferred | 165,000 | 3.11 | 16,500 | 100% |
| Malcolm | Inferred | 48,000 | 3.72 | 5,750 | 51 -90%1 |
| Total | Inferred | 2,050,000 | 1.54 | 115,227 |
1. Cascade currently holds an option to acquire 51% and has the right to earn up to a 90% pursuant to the relevant joint venture agreements.
2. Mt Stirling Well is a prospect within the Mt Stirling Project
A detailed summary of the supporting project assumptions and data (Table 1 as per JORC (2012) guidelines) is provided in the Appendix.
Taurus Project
The Taurus Project will be Torian’s flagship project and is located approximately 35 kilometres east of Kalgoorlie. Under the proposed acquisition, Torian will conditionally acquire an option to acquire 100% of 11 mining and exploration tenements covering an area of 16 square kilometres. The Taurus Project has an Inferred JORC resource of 1,536,000 tonnes @ 1.24 g/t Au. The Taurus Project also has a number of small scale underground mines and workings which have seen previous gold production.
There are four high priority drill targets at the project, some of which have been exploited historically on a small scale. An exploration program at the Taurus Project is planned to commence immediately after transaction completion with the aim of growing the existing JORC Inferred resource.
Access from Kalgoorlie to the Taurus Project is via a 35 kilometre bitumen and gravel road. The Taurus Project is situated within 50 kilometres of several operating gold processing plants.
The Taurus Project is along strike of Silver Lake Resources Limited’s Mt Monger Project (10.3Mt at 7.22g/t for 2.4Moz Au) and is bordered by Silver Lake Resources Limited (ASX:SLR) and Southern Gold Limited’s (ASX:SAU) leases. Previous metallurgical testwork on this project indicated that a significant proportion (more than 75%) of the gold is coarse grained (+1mm).
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Previous drill sampling has utilised a range of drilling methods (reverse circulation and diamond drilling), different hole sizes and assay methods that may not have sampled the coarse gold effectively. A more rigorous drilling and sampling programme designed to more precisely determine the in-situ grades at the Taurus Central prospect is fundamental to understanding the true grade of this resource.
There are additional targets at the Taurus Project that have not been fully explored and evaluated. These targets will be a high priority for the Company’s initial exploration program.
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Figure 2: Map showing two multi-million Oz mines discovered by Matthew Sullivan (Red) and their proximity to the Taurus Project (Blue).
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Figure 3: Map showing Taurus prospects, geology and drilling.
Mt Stirling Project
The Mt Stirling Project is located approximately 40 kilometres north west of Leonora. Under the proposed transaction, Torian will acquire an option to acquire 100% of the Mt Stirling Well prospect. Torian will also acquire options to acquire 51% of the Mt Stirling prospect and 51% of the Mt Cutmore prospect with an option to earn up to 90% of each prospect under the terms of two separate joint venture agreements. The Mt Stirling Project comprises 19 prospecting licences covering an area of 23 square kilometres.
The Mt Stirling Well Prospect has a current JORC compliant Inferred resource at the Mt Stirling Well prospect of 41,300 tonnes @ 8.54g/t for 11,300oz Au. This resource, whilst inferred, is a high grade, oxidised system, located at surface which the Company believes may be amenable to low cost mining. This resource is open in all directions and further exploration at this prospect is a high priority.
This mineralisation is a flat lying quartz vein hosted in granite. The granite has a diameter of approximately 1 kilometre and there is potential for the current resource to grow significantly.
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Previous drilling at the prospect occurs over a strike length of approximately 200 metres and there is no drilling deeper than about 40 metres.
Between 1897 and 1913, a small underground mine was active at the Mt Stirling Well prospect. Recorded production from the mine was 3,354 tonnes @ 52.02g/t Au for 5,610 oz’s Au.
Previous exploration at the Mt Stirling Project has focused on a small number of targets defined by old workings. RC drilling was conducted at these targets however they remain open along strike and down dip. The Mt Stirling Project has a number of other targets that have been defined by surface sampling that have not been drill tested to date.
Mt Keith Project
The Mt Keith Project is located approximately 60 kilometres south of Wiluna. Under the proposed transaction, Torian will acquire an option to acquire 100% of the Mt Keith Project. The Mt Keith Project comprises two mining leases covering an area of approximately 12 square kilometres.
The Mt Keith Project has received superficial exploration to date, focusing on historic workings. Several reconnaissance RAB holes have intersected anomalous values away from the historic workings. Many of these have not been followed up by RC drilling. In addition Inferred resources have been defined from previous shallow RC drilling. All resources remain open along strike and also at depth.
Other targets have been defined from previous soil geochemical sampling and areas of gold nuggets being found at or very near surface. Most of these areas have never been drill tested.
Malcolm Project
The Malcolm Project is located approximately 20 kilometres east of Leonora. Under the proposed transaction Torian will acquire an option to acquire 100% of the Rabbit Warren South prospect and options to acquire 51% interests in the Mt Stewart, Braemore, Malcolm and Mt George Prospects. Torian has the right to earn up to 90% of each of these Prospects under the terms of various joint venture agreements. The Malcolm Project comprises 54 tenements covering an area of approximately 75 square kilometres.
The Malcolm Project has received only superficial exploration to date, focusing on historic workings. Several reconnaissance RAB holes have intersected anomalous values away from the historic workings. Many of these have not been followed up by RC drilling. In addition JORC Inferred resources have been defined from previous shallow RC drilling. All resources remain open along strike and also at depth.
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Other targets have been defined from previous soil geochemical sampling and areas of gold nuggets being found at or very near surface. Most of these areas have never been drill tested.
Heads of Agreement:
The key terms of the Heads of Agreement are outlined below:
Consideration
The consideration payable by the Company under the proposed transaction is 33,333,333 fully paid ordinary shares in the capital of the Company ( Shares ) on a post-Consolidation basis (being 1,100,000,000 Shares on a pre-Consolidation basis) to Cascade Resources Limited.
Escrow Arrangements
The following parties will be subject to a minimum of 12 months escrow:
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Cascade Resources Limited;
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The Project Vendors; and
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Certain holdings of the existing Directors of Torian.
Conditions Precedent
The acquisition by the Company of the Acquisition Options held by Cascade will be conditional upon:
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The Company re-complying with Chapters 1 and 2 of the ASX Listing Rules;
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Torian completing due diligence on Cascade to its satisfaction;
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Cascade completing due diligence to its satisfaction on Torian;
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The Project Vendors agreeing to enter into assignment of the Acquisition Options to the satisfaction of Torian;
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Both Torian and Cascade obtaining all required shareholder approvals necessary for the proposed transaction;
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The Company undertaking a consolidation of capital on a ratio of 33:1, occurring simultaneously with the issue of the consideration ( Consolidation );
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The Company completing a capital raising of up to $4,000,000 through the issue of up to 20,000,000 Shares at an issue price of $0.20 per Share, on a post-Consolidation basis (being 660,000,000 Shares on a pre-Consolidation basis); and
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The appropriate entities entering into voluntary escrow agreements.
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Issue of Shares to Vendors
The Company will issue 7,200,000 Shares on a post-consolidation basis (being 237,600,000 Shares on a pre-Consolidation basis) and pay $1,060,000 cash to the vendors of the projects in consideration for the exercise of the Acquisition Options.
Re-Compliance with ASX Listing Rules Chapters 1 And 2:
ASX has confirmed that the proposed transaction will result in a significant change to the nature and scale of Torian’s activities and that ASX Listing Rules 11.1.2 and 11.1.3 will apply to the proposed transaction. The proposed transaction will therefore require the approval of Torian shareholders under ASX Listing Rule 11.1.2 and will also require Torian to re-comply with Chapters 1 and 2 of the ASX Listing Rules.
Shareholder Approvals:
A notice of meeting seeking shareholder approval for the resolutions required to effect the proposed transaction will be sent to Torian shareholders in due course. It is expected that Torian will convene a meeting to facilitate shareholder approval in August 2014.
On the date of the meeting, Torian securities will be suspended and, subject to Torian shareholder approval being obtained, will remain suspended until Torian has re-complied with ASX Listing Rules and the proposed transaction has taken effect.
Proposed Capital Structure:
The anticipated effect of the Proposed Transaction on the capital structure of the Company is set out in the table below. The table assumes that shares have previously been issued to unsecured creditors as announced 8 April 2014.
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| Shares | Options | |
|---|---|---|
| Securities on issue pre consolidation and post debt conversion |
500,332,463 | 30,200,0001 |
| Securities on issue post consolidation2 (33:1) | 15,161,590 | 915,151 |
| Consideration for Proposed Transaction | 33,333,333 | Nil |
| Capital Raising | 20,000,000 | Nil |
| Project Vendors | 7,200,000 | Nil |
| Total | 75,694,923 | 915,151 |
Notes :
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5,075,000 unlisted options exercisable at 20 cents each on or before 31 December 2014, 5,075,000 unlisted options exercisable at 22 cents each on or before 31 December 2014, 10,000,000 unlisted options exercisable at 4.6 cents each on or before 29 December 2015, 5,025,000 unlisted options exercisable at 24 cents each on or before 31 December 2015 and 5,025,000 unlisted options exercisable at 26 cents each on or before 31 December 2015.
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The Consolidation will result in the price of Shares increasing from approximately $0.006 to approximately $0.20.
Proposed Board Changes:
Torian is pleased to welcome Mr Matthew Sullivan and Mr Andrew Sparke to the Board effective immediately. Matthew and Andrew add significant technical and corporate knowledge to the existing Board of Torian. Detailed biographies are set out below. As part of the proposed transaction the board will be reconstituted as follows:
Non-Executive Chairman: Mr Andrew Sparke Managing Director: Mr Matthew Sullivan Executive Director: Mr Sunil Dhupelia Non-Executive Director: Mr Nathan Taylor
Mr Matthew Sullivan (Incoming Managing Director)
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Experienced geologist and listed company director with 25 years experience working in the Goldfields of WA.
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One of only 6 geologists in Australia to find more than 3Moz’s twice.
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Significant discoveries include Kanowna Belle (6Moz’s), East Kundana (3.5Moz’s), Selene (800Koz’s), Safari Bore (400Koz’s), St Patricks (400Koz’s) and in the Leonora region (500Koz’s).
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Second in Australian explorer of the year (2010) for the discovery of 500K oz’s in 5 months in Leonora.
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Total discovery of circa 12Moz’s Au.
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B.App. Sc (Applied Geology), AusIMM.
Mr Andrew Sparke (Incoming Non-Executive Chairman)
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10 years Corporate Finance experience that includes IPO’s, private placements and secondary market transactions.
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Advised a number of ASX listed companies on capital raisings and corporate transactions.
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Director of a number of public and private companies including Olive Capital Pty Ltd.
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B.Bus (Marketing), M.Fin (Current), MAICD.
Proposed Indicative Timetable*:
| Event | Date |
|---|---|
| ASX announcement of the Proposed Transaction | June 2014 |
| Due Diligence | Commencing June 2014 |
| Send Notice of Meeting seeking approval for Capital Raising, Consolidation and issue of Shares as consideration for the Proposed Transaction |
July 2014 |
| Lodge Prospectus and Offer Opens (Securities suspended from this date) |
August 2014 |
| Shareholder meeting | August 2014 |
| Complete Capital Raising | August / September 2014 |
| Satisfaction (or waiver) of other Conditions | September 2014 |
| Completion of Proposed Transaction | September 2014 |
| Securities resume trading | September 2014 |
- This timetable is indicative only and subject to change.
For further information please contact:
Elissa Hansen
Company Secretary
02 9290 9606
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Competency Statement
The information in this report relation to Exploration Results and Mineral Resources is based on information reviewed by Mr Matthew Sullivan who is a Member of the Australasian Institute of Mining and Metallurgy and has sufficient exploration experience which is relevant to the style of mineralisation under consideration to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves’. Mr Sullivan is a director of Torian Resources and Cascade Resources and consents to the inclusion of the matters based on his information in the form and context in which it appears.
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ANNEXURE A – PRO FORMA BALANCE SH EET AS AT 31 MARCH 2014
The unaudited pro-forma Balance Sheet has been prepared to provide information on the assets and liabilities of the Company and pro-forma assets and liabilities of the Company as noted below. The historical and pro-forma financial information is presented in an abbreviated form, insofar as it does not include all of the disclosures required by Australian Accounting Standards applicable to annual financial statements.
Balance Sheet and Pro Forma Balance Sheet as at 31 March 2014
| Balance Sheet Pro Forma Adjustments Note 31-Mar-14 |
Unaudited | |
|---|---|---|
| Pro Forma Balance Sheet |
||
| 31-Mar-14 | ||
| ASSETS | 221,636 2,785,375 1 44,626 - |
3,007,011 44,626 |
| CURRENT ASSETS | ||
| Cash and cash equivalents | ||
| Trade and other receivables | ||
| 266,262 2,785,375 - |
3,051,637 | |
| TOTAL CURRENT ASSETS | ||
| 350,000 (250,000) 2 16,857 - - 8,560,606 3 |
100,000 16,857 8,560,606 |
|
| NON-CURRENT ASSETS | ||
| Financial assets | ||
| Property, plant and equipment | ||
| Exploration and evaluation assets | ||
| 366,857 8,310,606 |
8,677,463 | |
| TOTAL NON-CURRENT ASSETS | ||
| 633,119 11,095,981 |
11,729,100 | |
| TOTAL ASSETS | ||
| 311,899 (100,000) 4 708,152 (708,152) 5 |
211,899 - |
|
| LIABILITIES | ||
| CURRENT LIABILITIES | ||
| Trade and other payables | ||
| Financial liabilities | ||
| 1,020,051 (808,152) - |
211,899 | |
| TOTAL CURRENT LIABILITIES | ||
| 1,020,051 (808,152) |
211,899 | |
| TOTAL LIABILITIES | ||
| (386,932) 11,904,133 |
11,517,201 | |
| NET ASSETS | ||
| 55,209,411 11,804,133 6 1,995,700 - (57,592,043) 100,000 7 |
67,013,544 1,995,700 (57,492,043) |
|
| EQUITY | ||
| Issued capital | ||
| Reserves | ||
| Accumulated losses |
(386,932)
TOTAL EQUITY
11,904,133
11,517,201
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Pro Forma Adjustment Notes:
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Recognition of net cash below adjustments and inclusive of cash raised of $3.6 million ($4 million net of costs of raising share capital). Additional funds of $350,000 anticipated to be recovered by way of exercise of put option (see note 2) and recoup of $100,000 in rehabilitation bonds (see note 7). Reductions in cash relate to $1,060,000 option payment to Cascade and smaller reductions to pay interest owed as part of debt conversion (see Note 5);
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Reduction in $350,000 shares in Elsmore Resources Limited by $250,000 in put options. Exercise of put option reflected by corresponding $250,000 increase to net cash (included in net adjustments at 1 above);
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Exploration assets purchased by way of issue of shares to purchase option agreements owned by Cascade, and cash and share issues to exercise the options, which are all costs associated with acquiring the underlying tenements;
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Net $100,000 accrued liability reduction as a result of scrip issues which will discharge part of accrued Directors fees and rental owed to related parties;
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Debt conversion and full reduction of loans payable to related and third parties on the following basis:
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a. $150,000 payable to Mr Ian Johns/his related entities discharged by share issue;
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b. $198,216 payable to former Director Mr Peter Ashcroft/his related entities discharged by share issue;
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c. $278,524 owed in loans that have been agreed to be converted into scrip. $255,312 in principal to be repaid in scrip and $23,212 in interest owed to be paid via cash;
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d. $81,412 loan payable inclusive of interest to be repaid in cash;
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Issue of capital to reflect the acquisition of Cascade and exercise of options in addition to all agreed conversions of debt or trade payables;
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Reduction in carried forward losses to account for receipt of conservatively estimated $100,000 in rehabilitation bonds on transfer/surrender of tenements. Note that in prior audited financial statements auditors recommended the write off of these bonds and they were impaired however the company has a track record of recovering these bonds and they are highly likely to be received. On receipt the impairment will be reversed and will result in a net favourable reduction in carried forward losses.
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ANNEXURE B – JORC CODE, 2012 EDITION TABLES
Taurus Project
JORC Code, 2012 Edition – Table 1
Section 1 Sampling Techniques and Data
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(Criteria in this section apply to all succeeding sections.) Criteria JORC Code explanation Sampling Nature and quality of sampling (eg cut channels, random chips, or specific techniques specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling.
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Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used.
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Aspects of the determination of mineralisation that are Material to the Public Report.
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In cases where ‘industry standard’ work has been done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information.
| Drilling | | Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, |
|---|---|---|
| techniques | auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard | |
| tube, depth of diamond tails, face-sampling bit or other type, whether core is | ||
| oriented and if so, by what method, etc). |
Commentary
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All data and results referred to in this report are historic, and date from the late 1980s to the present day. This data has been judged to be reliable following independent research, including discussions with previous operators and explorers in person.
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Samples were collected via Rotary Air Blast (RAB) and Reverse Circulation (RC) drill chips. A minor number of diamond drillholes (DD) were drilled at Taurus.
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All drilling yielded samples on a metre basis. RAB drilling samples were commonly composited into intervals of 4 or 5m, with selected individual or 2m resamples collected. Reverse Circulation (RC) drilling is utilised to obtain 1 m samples which are riffle split, from which approx. 2-3 kg is pulverised to produce a 50 g charge for fire assay. Diamond core is sawn in half before crushing, pulverising and assaying.
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Sample preparation method is total material dried and pulverized to nominally 85% passing 75 µm particle size. Gold analysis method is generally by 50g Fire Assay, with Atomic Absorption Spectrometry (AAS) finish (DL 0.01 – UL 50 ppm Au). Samples exceeding the upper limit of the method were automatically re-assayed utilizing a high grade gravimetric method.
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RAB holes were typically 100mm in diameter, RC drilling usually 155mm in diameter; diamond drilling was either NQ (50mm) or HQ (63mm). Triple tube coring was used in oxide zones. Core was orientated where possible via spear to mark the bottom of the hole. RC drilling was via a face sampling hammer.
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Drill sample | | Method of recording and assessing core and chip sample recoveries and | | Recoveries were logged onto paper logs during drilling. Recoveries were |
| recovery | results assessed. | visually assessed. | ||
| | Measures taken to maximise sample recovery and ensure representative | | Sample recoveries were maximised in RAB and RC drilling via collecting the | |
| nature of the samples. | samples in a cyclone prior to sub sampling. Diamond drilling used drilling | |||
| | Whether a relationship exists between sample recovery and grade and | muds to reduce loss of core in oxide zones and careful monitoring of the | ||
| whether sample bias may have occurred due to preferential loss/gain of | pumping of drilling fluids. RAB drillholes were stopped if significant water | |||
| fine/coarse material. | flows were encountered. | |||
| | No relationship appears from the data between sample recovery and grade of | |||
| the samples. | ||||
| Logging | | Whether core and chip samples have been geologically and geotechnically | | All drillholes were geologically logged, whilst the diamond holes at Taurus |
| logged to a level of detail to support appropriate Mineral Resource estimation, | also have geotechnical logs. This logging appears to be of high quality and | |||
| mining studies and metallurgical studies. | suitable for use in further studies. | |||
| | Whether logging is qualitative or quantitative in nature. Core (or costean, | | Logging is qualitative in nature. | |
| channel, etc) photography. | | All samples / intersections are logged. 100% of relevant length intersections | ||
| | The total length and percentage of the relevant intersections logged. | are logged. | ||
| Sub-sampling | | If core, whether cut or sawn and whether quarter, half or all core taken. | | Non-core RC drill chip sample material is riffle split, where sample is dry. In |
| techniques and | |
If non-core, whether riffled, tube sampled, rotary split, etc and whether | case of wet sample a representative ‘grab’ sample method is utilized. | |
| sample | sampled wet or dry. | | The sample preparation technique is total material dried and pulverized to | |
| preparation | | For all sample types, the nature, quality and appropriateness of the sample | nominally 85% passing 75 µm particle size, from which a 50g charge was | |
| preparation technique. | representatively riffle split off, for assay. | |||
| | Quality control procedures adopted for all sub-sampling stages to maximise | | Standard check (known value) sample were not used in all cases. Where | |
| representivity of samples. | used the known values correspond closely with the expected values. A | |||
| | Measures taken to ensure that the sampling is representative of the in situ | duplicate (same sample duplicated) were commonly inserted for every 20 or | ||
| material collected, including for instance results for field duplicate/second-half | 30 samples taken. | |||
| sampling. | | There is a significant amount of coarse gold at Taurus. This is reflected in | ||
| | Whether sample sizes are appropriate to the grain size of the material being | the poor repeatability of some samples and also noted on the drill logs. | ||
| sampled. | ||||
| Quality of | | The nature, quality and appropriateness of the assaying and laboratory | | Various independent laboratories have assayed samples from the projects |
| assay data and | procedures used and whether the technique is considered partial or total. | over the years. In general they were internationally accredited for QAQC in | ||
| laboratory tests | | For geophysical tools, spectrometers, handheld XRF instruments, etc, the | mineral analysis. | |
| parameters used in determining the analysis including instrument make and | | No geophysical tools have been used to date. | ||
| model, reading times, calibrations factors applied and their derivation, etc. | | The laboratories inserted blank and check samples for each batch of samples | ||
| | Nature of quality control procedures adopted (eg standards, blanks, | analysed and reports these accordingly with all results. | ||
| duplicates, external laboratory checks) and whether acceptable levels of | ||||
| accuracy (ie lack of bias) andprecision have been established. |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Verification of | | The verification of significant intersections by either independent or | | Selected significant intersections were resampled from original remnant |
| sampling and | alternative company personnel. | sample material and analysed again. | ||
| assaying | | The use of twinned holes. | | Generally few twinned holes have been used to date, though some are |
| | Documentation of primary data, data entry procedures, data verification, data | present at Taurus. | ||
| storage (physical and electronic) protocols. | | Documentation of primary data is field log sheets (hand written). Primary | ||
| | Discuss any adjustment to assay data. | data is entered into application specific data base. The data base is | ||
| subjected to data verification program, erroneous data is corrected. Data | ||||
| storage is retention of physical log sheet, two electronic backup storage | ||||
| devices and primary electronic database. | ||||
| Location of | | Accuracy and quality of surveys used to locate drill holes (collar and down- | | Survey control used is satellite based differential GPS total station. Down |
| data points | hole surveys), trenches, mine workings and other locations used in Mineral | hole surveys were completed on most RC and diamond drillholes at Taurus, | ||
| Resource estimation. | but not the other projects. These surveys were via a single shot down hole | |||
| | Specification of the grid system used. | tool. As the other areas contain drillholes to no more than 100m significant | ||
| | Quality and adequacy of topographic control. | deviations are not expected. | ||
| | Grid systems are various local grid converted to MGA coordinates. | |||
| | Topographic control is accurate to +/- 0.5 m. | |||
| Data spacing | | Data spacing for reporting of Exploration Results. | | The drill spacing is variable but generally no greater than 200m by 40m, with |
| and distribution | | Whether the data spacing and distribution is sufficient to establish the degree | some areas infilled to 40m by 40m and 20m by 20m. Certain small areas at | |
| of geological and grade continuity appropriate for the Mineral Resource and | Taurus are drilled to 10m by 10m. | |||
| Ore Reserve estimation procedure(s) and classifications applied. | | The infilled areas have drilling density sufficient for JORC Inferred category. | ||
| | Whether sample compositing has been applied. | Further infill will be required for other categories. | ||
| | Apart from the reconnaissance RAB drilling, no sample compositing has been | |||
| used. | ||||
| Orientation of | | Whether the orientation of sampling achieves unbiased sampling of possible | | Apart from some vertical reconnaissance RAB drilling, the orientation of the |
| data in relation | structures and the extent to which this is known, considering the deposit type. | drilling is approximately at right angles to the known mineralisation and so | ||
| to geological | | If the relationship between the drilling orientation and the orientation of key | gives a fair representation of the mineralisation intersected. | |
| structure | mineralised structures is considered to have introduced a sampling bias, this | | No sampling bias is believed to occur due to the orientation of the drilling. | |
| should be assessed and reported if material. | ||||
| Sample | | The measures taken to ensure sample security. | | Samples were delivered to the laboratory in batches at regular intervals. |
| security | These are temporarily stored in a secure facility after drilling and before | |||
| delivery | ||||
| Audits or | | The results of any audits or reviews of sampling techniques and data. | | The company engages independent consultants who regularly audit the data |
| reviews | for inconsistencies and other issues. None have been reported to date. |
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Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Mineral | | Type, reference name/number, location and ownership including agreements | | The details relating to the tenements are located in the Tenement Status |
| tenement and | or material issues with third parties such as joint ventures, partnerships, | section of this report. | ||
| land tenure | overriding royalties, native title interests, historical sites, wilderness or | |||
| status | national park and environmental settings. | Details of tenement status are discussed elsewhere in this report. |
||
| | The security of the tenure held at the time of reporting along with any known | |||
| impediments to obtaining a licence to operate in the area. | ||||
| Exploration | | Acknowledgment and appraisal of exploration by other parties. | | All work relating to previous exploration contained within this report was |
| done by other | completed by other parties. Details are included in the references. | |||
| parties | ||||
| Geology | | Deposit type, geological setting and style of mineralisation. | | Details of the geology are found elsewhere in this report. |
| Drill hole | | A summary of all information material to the understanding of the exploration | | Details of the drilling, etc are found within the various tables and diagrams |
| Information | results including a tabulation of the following information for all Material drill | elsewhere in this report. | ||
| holes: | | No material information, results or data have been excluded. | ||
o easting and northing of the drill hole collar |
||||
o elevation or RL (Reduced Level – elevation above sea level in metres) of |
||||
| the drill hole collar | ||||
o dip and azimuth of the hole |
||||
o down hole length and interception depth |
||||
o hole length. |
||||
| | If the exclusion of this information is justified on the basis that the information | |||
| is not Material and this exclusion does not detract from the understanding of | ||||
| the report, the Competent Person should clearly explain why this is the case. | ||||
| Data | | In reporting Exploration Results, weighting averaging techniques, maximum | | Weighted averages were calculated by a simple weighting of from and to |
| aggregation | and/or minimum grade truncations (eg cutting of high grades) and cut-off | distances down each hole. Most samples are 1 metre samples. No top cuts | ||
| methods | grades are usually Material and should be stated. | were applied. Lower cut-offs used were – Taurus 0.5g/t Au. | ||
| | Where aggregate intercepts incorporate short lengths of high grade results | A small number of high grade (+10g/t Au) values are present in the drill |
||
| and longer lengths of low grade results, the procedure used for such | results at Taurus. These are shown in the tables elsewhere in this | |||
| aggregation should be stated and some typical examples of such | report. | |||
| aggregations should be shown in detail. | ||||
| | The assumptions used for any reporting of metal equivalent values should be | No | metal equivalent values are used | |
| clearly stated. | ||||
| Relationship | | These relationships are particularly important in the reporting of Exploration | | Details of geology, and selected cross sections are given elsewhere in this |
| between | Results. | report |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| mineralisation | | If the geometry of the mineralisation with respect to the drill hole angle is | | The drilling has been carried out either as vertical holes or steeply inclined |
| widths and | known, its nature should be reported. | towards the east. The mineralisation is gently dipping towards the west and | ||
| intercept | | If it is not known and only the down hole lengths are reported, there should | so the drilling orientation is approximately at right angles to the | |
| lengths | be a clear statement to this effect (eg ‘down hole length, true width not | mineralisation. | ||
| known’). | ||||
| Drill results are reported as down hole widths these are very close to true widths | ||||
| given the dip of the mineralisation and the angle of the holes. | ||||
| Diagrams | | Appropriate maps and sections (with scales) and tabulations of intercepts | | Details of geology, and selected cross sections are given elsewhere in this |
| should be included for any significant discovery being reported These should | report. | |||
| include, but not be limited to a plan view of drill hole collar locations and | ||||
| appropriate sectional views. | ||||
| Balanced | | Where comprehensive reporting of all Exploration Results is not practicable, | | Details of the results, drilling, etc are reported elsewhere in this report. |
| reporting | representative reporting of both low and high grades and/or widths should be | |||
| practiced to avoid misleading reporting of Exploration Results. | ||||
| Other | | Other exploration data, if meaningful and material, should be reported | | Details of geology, and selected cross sections are given elsewhere in this |
| substantive | including (but not limited to): geological observations; geophysical survey | report. | ||
| exploration | results; geochemical survey results; bulk samples – size and method of | |||
| data | treatment; metallurgical test results; bulk density, groundwater, geotechnical | |||
| and rock characteristics; potential deleterious or contaminating substances. | ||||
| Further work | | The nature and scale of planned further work (eg tests for lateral extensions | | Proposed work included drilling of selected twin holes followed by infill and |
| or depth extensions or large-scale step-out drilling). | step out RC drilling across all resources. The aim of such work is to increase | |||
| | Diagrams clearly highlighting the areas of possible extensions, including the | confidence in the data and also to test for extensions to the known resources. | ||
| main geological interpretations and future drilling areas, provided this | Budgets are being prepared for this work at present. | |||
| information is not commercially sensitive. | | In addition a significant number of additional prospects are known to exist | ||
| within the projects as defined by previous RAB and RC drilling intersections. | ||||
| These will form the second phase of exploration. | ||||
| | Various maps and diagrams are presented elsewhere in this report to | |||
| highlight possible extensions and new targets. |
Section 3 Estimation and Reporting of Mineral Resources
| Section 3 Estimation and Reporting of Mineral Resources | Section 3 Estimation and Reporting of Mineral Resources | ||
|---|---|---|---|
| (Criterialistedinsection 1, andwhererelevantinsection 2, also apply to this section.) | |||
| Criteria | JORC Code explanation | Commentary | |
| Database | Measures taken to ensure that data has not been corrupted by, for example, |
| The database was checked against the hard copy originals for validity. |
| integrity | transcription or keying errors, between its initial collection and its use for | | Data validation checked consistency of features such as hole depth, |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Mineral Resource estimation purposes. | consistent down hole surveys, duplicate assays, etc. | |||
| | Data validationprocedures used. | |||
| Site visits | | Comment on any site visits undertaken by the Competent Person and the | | The competent person made site visits to all projects during the course of the |
| outcome of those visits. | last year. | |||
| | If no site visits have been undertaken indicate why this is the case. | |||
| Geological | | Confidence in (or conversely, the uncertainty of ) the geological interpretation | | The geology of the various resources is reasonably well documented and |
| interpretation | of the mineral deposit. | understood. Most are in areas of outcrop and so direct observation of dips, | ||
| | Nature of the data used and of any assumptions made. | strikes, widths, etc have been made. | ||
| | The effect, if any, of alternative interpretations on Mineral Resource | | 3D models of the geology were commonly used as a guide for the | |
| estimation. | interpretation of the mineralization. | |||
| | The use of geology in guiding and controlling Mineral Resource estimation. | | Continuity is assumed to be from hole to hole. As the maximum spacing of | |
| | The factors affecting continuity both of grade and geology. | holes is 40m in the resources this appears to be a reasonable assumption. | ||
| At all times the geology guided the continuity. No faults or other dislocations | ||||
| that may influence the geological continuity are known within the resources. | ||||
| Dimensions | | The extent and variability of the Mineral Resource expressed as length (along | |
The widths of the mineralisation within the resources are fairly uniform. The |
| strike or otherwise), plan width, and depth below surface to the upper and | strike and dip extents of the mineralisation in the various resources is | |||
| lower limits of the Mineral Resource. | determined solely by drilling. | |||
| Estimation and | | The nature and appropriateness of the estimation technique(s) applied and | | The resources were estimated using Micromine software. The mineralization |
| modelling | key assumptions, including treatment of extreme grade values, domaining, | was wireframed at the cut off grades stated above. Where high grade | ||
| techniques | interpolation parameters and maximum distance of extrapolation from data | domains were noted these were subset from the overall wireframes. | ||
| points. If a computer assisted estimation method was chosen include a | | Where historic workings are also mapped these were also wireframed and | ||
| description of computer software and parameters used. | deducted from the resource. These estimates were validated against historic | |||
| | The availability of check estimates, previous estimates and/or mine | production records where known. | ||
| production records and whether the Mineral Resource estimate takes | | Geological models were used to constrain the mineralization models. The | ||
| appropriate account of such data. | method used is considered to be suitable for the estimation of Inferred | |||
| | The assumptions made regarding recovery of by-products. | Resources. More complex methods may be appropriate for resources of | ||
| | Estimation of deleterious elements or other non-grade variables of economic | higher category. | ||
| significance (eg sulphur for acid mine drainage characterisation). | | There is modest previous mining activity across most of the resources. | ||
| | In the case of block model interpolation, the block size in relation to the | These provide evidence of width, dip, strikes, etc. In the case of Taurus there | ||
| average sample spacing and the search employed. | was a previous estimate of resources made in the 1990s. This was not | |||
| | Any assumptions behind modelling of selective mining units. | JORC compliant and pre-dates the drilling of many later RC and diamond | ||
| | Any assumptions about correlation between variables. | drillholes. | ||
| | Description of how the geological interpretation was used to control the | | Top cuts were not applied, however their influence on the wireframes was | |
| resource estimates. | reduced by domaining high grade zones separately. | |||
| | _Discussion of basis for using or not using grade cutting or capping. _ | | No data was available for reconciliation. The model was compared to the drill |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| | The process of validation, the checking process used, the comparison of | data directly on section using the geological features as a guide. Minor | ||
| model data to drill hole data, and use of reconciliation data if available. | adjustments were made following this. | |||
| Moisture | | Whether the tonnages are estimated on a dry basis or with natural moisture, | | The estimates are made on a dry basis as little information exists reliably |
| and the method of determination of the moisture content. | outlining the moisture contents. | |||
| Cut-off | | The basis of the adopted cut-off grade(s) or quality parameters applied. | | The lower cut off were arbitrarily assigned after a visual assessment of the |
| parameters | mineralization on cross sections. No upper cuts were applied, but their | |||
| potential influence was reduced by separately domaining any high grade | ||||
| areas. | ||||
| Mining factors | | Assumptions made regarding possible mining methods, minimum mining | | All resources are assumed to be open pittable. This is due to the oxide |
| or assumptions | dimensions and internal (or, if applicable, external) mining dilution. It is | nature of the upper parts of the resources and the relatively shallow nature of | ||
| always necessary as part of the process of determining reasonable prospects | the drilling to date. No mining studies have been made to date for any | |||
| for eventual economic extraction to consider potential mining methods, but | resource. | |||
| the assumptions made regarding mining methods and parameters when | ||||
| estimating Mineral Resources may not always be rigorous. Where this is the | ||||
| case, this should be reported with an explanation of the basis of the mining | ||||
| assumptions made. | ||||
| Metallurgical | | The basis for assumptions or predictions regarding metallurgical amenability. | | All mineralisation is assumed to be free milling on the basis of historic data. |
| factors or | It is always necessary as part of the process of determining reasonable | The Taurus mineralization contains a significant amount of coarse gold as | ||
| assumptions | prospects for eventual economic extraction to consider potential metallurgical | noted in previous metallurgical reports. Most other resource contain some | ||
| methods, but the assumptions regarding metallurgical treatment processes | visible gold either in panned drill cuttings or directly observed in historic | |||
| and parameters made when reporting Mineral Resources may not always be | workings. A significant proportion of gravity recoverable gold would be | |||
| rigorous. Where this is the case, this should be reported with an explanation | expected in any future processing. | |||
| of the basis of the metallurgical assumptions made. | ||||
| Environmental | | Assumptions made regarding possible waste and process residue disposal | | The assumed operations will have typical waste dumps as seen in many sites |
| factors or | options. It is always necessary as part of the process of determining | across Western Australia. These include dewatering and tailings disposal | ||
| assumptions | reasonable prospects for eventual economic extraction to consider the | facilities. | ||
| potential environmental impacts of the mining and processing operation. | | No assumed operation in the future will have an unusual impact on the | ||
| While at this stage the determination of potential environmental impacts, | environment. | |||
| particularly for a greenfields project, may not always be well advanced, the | ||||
| status of early consideration of these potential environmental impacts should | ||||
| be reported. Where these aspects have not been considered this should be | ||||
| reported with an explanation of the environmental assumptions made. | ||||
| Bulk density | | Whether assumed or determined. If assumed, the basis for the assumptions. | | Bulk densities were assumed due to only a small amount of data being |
| If determined, the method used, whether wet or dry, the frequency of the | available at Taurus. An SG of 2.2t/m3 was assumed for all material. This | |||
| measurements, the nature, size and representativeness of the samples. | reflects the semi oxidised nature of most of the material. |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| | The bulk density for bulk material must have been measured by methods that | |
The bulk density data was derived from a combination of direct SG | |
| adequately account for void spaces (vugs, porosity, etc), moisture and | measurements from diamond drill core and a limited number of bulk samples | |||
| differences between rock and alteration zones within the deposit. | collected during previous metallurgical testwork. These account for voids etc. | |||
| | Discuss assumptions for bulk density estimates used in the evaluation | |||
| process of the different materials. | The bulk densities were averaged over various geological units such as |
|||
| completely oxidised material, semi oxidised and fresh rock. An overall | ||||
| SG of 2.2 was used which reflects the semi oxidised nature of the | ||||
| majority of the materlai. | ||||
| Classification | | The basis for the classification of the Mineral Resources into varying | | The classification of all resources as Inferred reflects various unknowns of the |
| confidence categories. | data. Despite this there is sufficient continuity of the mineralisation across all | |||
| | Whether appropriate account has been taken of all relevant factors (ie | resources. | ||
| relative confidence in tonnage/grade estimations, reliability of input data, | | As currently understood these estimates give a fair reflection of the | ||
| confidence in continuity of geology and metal values, quality, quantity and | resources. | |||
| distribution of the data). | | The classification is in the competent person’s view appropriate for the nature | ||
| | Whether the result appropriately reflects the Competent Person’s view of the | and data relating to the resource. | ||
| deposit. | ||||
| Audits or | | The results of any audits or reviews of Mineral Resource estimates. | | The resources have received a number of peer reviews. No key issues were |
| reviews | raised. | |||
| Discussion of | | Where appropriate a statement of the relative accuracy and confidence level | | The classification of the resources as Inferred reflects the presently |
| relative | in the Mineral Resource estimate using an approach or procedure deemed | understood confidence in the continuity of dimensions and grade of the | ||
| accuracy/ | appropriate by the Competent Person. For example, the application of | resources. | ||
| confidence | statistical or geostatistical procedures to quantify the relative accuracy of the | | Various features require additional drilling. For example the coarse gold at | |
| resource within stated confidence limits, or, if such an approach is not | Taurus needs additional sampling. In all cases the resources remain open, | |||
| deemed appropriate, a qualitative discussion of the factors that could affect | particularly down dip. | |||
| the relative accuracy and confidence of the estimate. | | A more rigorous statistical understanding of the mineralisation in the | ||
| | The statement should specify whether it relates to global or local estimates, | resources will be made following more detailed drilling. | ||
| and, if local, state the relevant tonnages, which should be relevant to | | The resources stated in this report relate to local estimates. Further drilling is | ||
| technical and economic evaluation. Documentation should include | warranted before any economic evaluation is made. | |||
| assumptions made and the procedures used. | | Details of assumptions used are stated in the report. | ||
| | These statements of relative accuracy and confidence of the estimate should | |||
| be compared withproduction data, where available. |
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Mt Stirling Project
JORC Code, 2012 Edition – Table 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
| Criteria | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|
| Sampling | Nature and quality of sampling (eg cut channels, random chips, or specific |
| All data and results referred to in this report are historic, and date from the |
| techniques | specialised industry standard measurement tools appropriate to the minerals | late 1980s to the present day. This data has been judged to be reliable | |
| under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. |
| following independent t research, including discussions with previous operators and explorers in person. Samples were collected via Rotary Air Blast (RAB) and Reverse Circulation (RC) drill chips. |
|
| Aspects of the determination of mineralisation that are Material to the Public |
| All drilling yielded samples on a metre basis. RAB drilling samples were | |
| Report. | commonly composited into intervals of 4 or 5m, with selected individual or | ||
| In cases where ‘industry standard’ work has been done this would be |
2m resamples collected. Reverse Circulation (RC) drilling is utilised to | ||
| relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant |
| obtain 1 m samples which are riffle split, from which approx. 2-3 kg is pulverised to produce a 50 g charge for fire assay. Sample preparation method is total material dried and pulverized to nominally 85% passing 75 µm particle size. Gold analysis method is |
|
| disclosure of detailed information. | generally by 50g Fire Assay, with Atomic Absorption Spectrometry (AAS) | ||
| finish (DL 0.01 – UL 50 ppm Au). Samples exceeding the upper limit of the | |||
| method were automatically re-assayed utilizing a high grade gravimetric | |||
| method. | |||
| Drilling | Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, |
| RAB holes were typically 100mm in diameter, RC drilling usually 155mm in |
| techniques | auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard | diameter. RC drilling was via a face sampling hammer. | |
| tube, depth of diamond tails, face-sampling bit or other type, whether core is | |||
| _oriented and if so, by what method, etc). _ | |||
| Drill sample | Method of recording and assessing core and chip sample recoveries and |
| Recoveries were logged onto paper logs during drilling. Recoveries were |
| recovery | results assessed. | visually assessed. | |
| Measures taken to maximise sample recovery and ensure representative |
| Sample recoveries were maximised in RAB and RC drilling via collecting the | |
| nature of the samples. | samples in a cyclone prior to sub sampling. RAB drillholes were stopped if | ||
| Whether a relationship exists between sample recovery and grade and |
significant water flows were encountered. | ||
| whether sample bias may have occurred due topreferential loss/gain of | | No relationshipappears from the data between sample recoveryandgrade of |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| fine/coarse material. | the samples. | |||
| Logging | | Whether core and chip samples have been geologically and geotechnically | | All drillholes were geologically logged. This logging appears to be of high |
| logged to a level of detail to support appropriate Mineral Resource estimation, | quality and suitable for use in further studies. | |||
| mining studies and metallurgical studies. | | Logging is qualitative in nature. | ||
| | Whether logging is qualitative or quantitative in nature. Core (or costean, | | All samples / intersections are logged. 100% of relevant length intersections | |
| channel, etc) photography. | are logged. | |||
| | The total length andpercentage of the relevant intersections logged. | |||
| Sub-sampling | | If core, whether cut or sawn and whether quarter, half or all core taken. | | Non-core RC drill chip sample material is riffle split, where sample is dry. In |
| techniques and | |
If non-core, whether riffled, tube sampled, rotary split, etc and whether | case of wet sample a representative ‘grab’ sample method is utilized. | |
| sample | sampled wet or dry. | | The sample preparation technique is total material dried and pulverized to | |
| preparation | | For all sample types, the nature, quality and appropriateness of the sample | nominally 85% passing 75 µm particle size, from which a 50g charge was | |
| preparation technique. | representatively riffle split off, for assay. | |||
| | Quality control procedures adopted for all sub-sampling stages to maximise | | Standard check (known value) sample were not used in all cases. Where | |
| representivity of samples. | used the known values correspond closely with the expected values. A | |||
| | Measures taken to ensure that the sampling is representative of the in situ | duplicate (same sample duplicated) were commonly inserted for every 20 or | ||
| material collected, including for instance results for field duplicate/second-half | 30 samples taken. | |||
| sampling. | | There is a significant amount of coarse gold at Mt Stirling Well. This is | ||
| | Whether sample sizes are appropriate to the grain size of the material being | reflected in the poor repeatability of some samples and also was noted on the | ||
| sampled. | drill logs. | |||
| Quality of | | The nature, quality and appropriateness of the assaying and laboratory | | Various independent laboratories have assayed samples from the project |
| assay data and | procedures used and whether the technique is considered partial or total. | over the years. In general they were internationally accredited for QAQC in | ||
| laboratory tests | | For geophysical tools, spectrometers, handheld XRF instruments, etc, the | mineral analysis. | |
| parameters used in determining the analysis including instrument make and | | No geophysical tools have been used to date. | ||
| model, reading times, calibrations factors applied and their derivation, etc. | | The laboratories inserted blank and check samples for each batch of samples | ||
| | Nature of quality control procedures adopted (eg standards, blanks, | analysed and reports these accordingly with all results. | ||
| duplicates, external laboratory checks) and whether acceptable levels of | ||||
| accuracy (ie lack of bias) andprecision have been established. | ||||
| Verification of | | The verification of significant intersections by either independent or | | Selected significant intersections were resampled from original remnant |
| sampling and | alternative company personnel. | sample material and analysed again. | ||
| assaying | | The use of twinned holes. | | No twinned holes have been used to date. |
| | Documentation of primary data, data entry procedures, data verification, data | | Documentation of primary data is field log sheets (hand written). Primary | |
| storage (physical and electronic) protocols. | data is entered into application specific data base. The data base is | |||
| | Discuss any adjustment to assay data. | subjected to data verification program, erroneous data is corrected. Data | ||
| storage is retention of physical log sheet, two electronic backup storage | ||||
| devices and primary electronic database. |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Location of | | Accuracy and quality of surveys used to locate drill holes (collar and down- | | Survey control used is hand held GPS. No down hole surveys were |
| data points | hole surveys), trenches, mine workings and other locations used in Mineral | completed to date. As these areas contain drillholes to no more than 100m | ||
| Resource estimation. | significant deviations are not expected. | |||
| | Specification of the grid system used. | | Grid systems are various local grid converted to MGA coordinates. | |
| | Quality and adequacy of topographic control. | | Topographic control is accurate to +/- 0.5 m. | |
| Data spacing | | Data spacing for reporting of Exploration Results. | | The drill spacing is variable but generally no greater than 200m by 40m, with |
| and distribution | | Whether the data spacing and distribution is sufficient to establish the degree | some areas infilled to 80m by 40m. | |
| of geological and grade continuity appropriate for the Mineral Resource and | | The areas have drilling density sufficient for JORC Inferred category. Further | ||
| Ore Reserve estimation procedure(s) and classifications applied. | infill will be required for other categories. | |||
| | Whether sample compositing has been applied. | | Apart from the reconnaissance RAB drilling, no sample compositing has been | |
| used. | ||||
| Orientation of | | Whether the orientation of sampling achieves unbiased sampling of possible | | Apart from some vertical reconnaissance RAB drilling, the orientation of the |
| data in relation | structures and the extent to which this is known, considering the deposit type. | drilling is approximately at right angles to the known mineralisation and so | ||
| to geological | | If the relationship between the drilling orientation and the orientation of key | gives a fair representation of the mineralisation intersected. | |
| structure | mineralised structures is considered to have introduced a sampling bias, this | | No sampling bias is believed to occur due to the orientation of the drilling. | |
| should be assessed and reported if material. | ||||
| Sample | | The measures taken to ensure sample security. | | Samples were delivered to the laboratory in batches at regular intervals. |
| security | These are temporarily stored in a secure facility after drilling and before | |||
| delivery | ||||
| Audits or | | The results of any audits or reviews of sampling techniques and data. | | The company engages independent consultants who regularly audit the data |
| reviews | for inconsistencies and other issues. None have been reported to date. |
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Mineral | | Type, reference name/number, location and ownership including agreements | | The details relating to the tenements are located in the Tenement Status |
| tenement and | or material issues with third parties such as joint ventures, partnerships, | section of this report. | ||
| land tenure | overriding royalties, native title interests, historical sites, wilderness or | |||
| status | national park and environmental settings. | The tenement status is described elsewhere in this report. | ||
| | The security of the tenure held at the time of reporting along with any known | |||
| impediments to obtaining a licence to operate in the area. | ||||
| Exploration | | Acknowledgment and appraisal of exploration by other parties. | | All work relating to previous exploration contained within this report was |
| done by other |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| parties | completed by other parties. Details are included in the references. | |||
| Geology | | Deposit type, geological setting and style of mineralisation. | | Details of the geology are found elsewhere in this report. |
| Drill hole | | A summary of all information material to the understanding of the exploration | | Details of the drilling, etc are found within the various tables and diagrams |
| Information | results including a tabulation of the following information for all Material drill | elsewhere in this report. | ||
| holes: | | No material information, results or data have been excluded. | ||
o easting and northing of the drill hole collar |
||||
o elevation or RL (Reduced Level – elevation above sea level in metres) of |
||||
| the drill hole collar | ||||
o dip and azimuth of the hole |
||||
o down hole length and interception depth |
||||
o hole length. |
||||
| | If the exclusion of this information is justified on the basis that the information | |||
| is not Material and this exclusion does not detract from the understanding of | ||||
| the report, the Competent Person should clearly explain why this is the case. | ||||
| Data | | In reporting Exploration Results, weighting averaging techniques, maximum | | Weighted averages were calculated by a simple weighting of from and to |
| aggregation | and/or minimum grade truncations (eg cutting of high grades) and cut-off | distances down each hole. Most samples are 1 metre samples. No top cuts | ||
| methods | grades are usually Material and should be stated. | were applied. Lower cut-offs used were – Mt Stirling 1g/t Au. | ||
| | Where aggregate intercepts incorporate short lengths of high grade results | | The high grade nature of the resource at Mt Stirling Well means that little low | |
| and longer lengths of low grade results, the procedure used for such | grade material has been included in the intersection table. At Mt Stirling a | |||
| aggregation should be stated and some typical examples of such | small amount of higher grade is consistently present in each intersection as | |||
| aggregations should be shown in detail. | shown in the drill results tables above. | |||
| | The assumptions used for any reporting of metal equivalent values should be | |||
| clearly stated. | ||||
| No metal equivalent values are used |
||||
| Relationship | | These relationships are particularly important in the reporting of Exploration | | Details of geology, and selected cross sections are given elsewhere in this |
| between | Results. | report | ||
| mineralisation | | If the geometry of the mineralisation with respect to the drill hole angle is | At Mt Stirling Well the gently dipping nature of the mineralisation means |
|
| widths and | known, its nature should be reported. | that steeply inclined holes give approximately true widths. At Mt Stirling | ||
| intercept | | If it is not known and only the down hole lengths are reported, there should | the steep dip of the mineralisation means that drill widths are | |
| lengths | be a clear statement to this effect (eg ‘down hole length, true width not | exaggerated. These are shown in the tables above. | ||
| known’). | ||||
| The tables above show drill widths not true widths. In the case of Mt | ||||
| Stirling Well the drill widths are approximately the same as true widths. | ||||
| Diagrams | | Appropriate maps and sections (with scales) and tabulations of intercepts | | Details of geology, and selected cross sections are given elsewhere in this |
| should be included for any significant discovery being reported These should |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| include, but not be limited to a plan view of drill hole collar locations and | report. | |||
| appropriate sectional views. | ||||
| Balanced | | Where comprehensive reporting of all Exploration Results is not practicable, | | Details of the results, drilling, etc are reported elsewhere in this report. |
| reporting | representative reporting of both low and high grades and/or widths should be | |||
| practiced to avoid misleading reporting of Exploration Results. | ||||
| Other | | Other exploration data, if meaningful and material, should be reported | | Details of geology, and selected cross sections are given elsewhere in this |
| substantive | including (but not limited to): geological observations; geophysical survey | report. | ||
| exploration | results; geochemical survey results; bulk samples – size and method of | |||
| data | treatment; metallurgical test results; bulk density, groundwater, geotechnical | |||
| and rock characteristics; potential deleterious or contaminating substances. | ||||
| Further work | | The nature and scale of planned further work (eg tests for lateral extensions | | Proposed work included drilling of selected twin holes followed by infill and |
| or depth extensions or large-scale step-out drilling). | step out RC drilling across all resources. The aim of such work is to increase | |||
| | Diagrams clearly highlighting the areas of possible extensions, including the | confidence in the data and also to test for extensions to the known resources. | ||
| main geological interpretations and future drilling areas, provided this | Budgets are being prepared for this work at present. | |||
| information is not commercially sensitive. | | In addition a significant number of additional prospects are known to exist | ||
| within the projects as defined by previous RAB and RC drilling intersections. | ||||
| These will form the second phase of exploration. | ||||
| | Various maps and diagrams are presented elsewhere in this report to | |||
| highlight possible extensions and new targets. |
Section 3 Estimation and Reporting of Mineral Resources
(Criteria listed in section 1, and where relevant in section 2, also apply to this section.)
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Database | | Measures taken to ensure that data has not been corrupted by, for example, | | The database was checked against the hard copy originals for validity. |
| integrity | transcription or keying errors, between its initial collection and its use for | | Data validation checked consistency of features such as hole depth, | |
| Mineral Resource estimation purposes. | consistent down hole surveys, duplicate assays, etc. | |||
| | Data validationprocedures used. | |||
| Site visits | | Comment on any site visits undertaken by the Competent Person and the | | The competent person made site visits to all projects during the course of the |
| outcome of those visits. | last year. | |||
| | If no site visits have been undertaken indicate why this is the case. | |||
| Geological | | Confidence in (or conversely, the uncertainty of ) the geological interpretation | | The geology of the various resources is reasonably well documented and |
| interpretation | of the mineral deposit. | understood. Most are in areas of outcrop and so direct observation of dips, | ||
| | Nature of the data used and of any assumptions made. | strikes, widths, etc have been made. | ||
| | The effect, if any, of alternative interpretations on Mineral Resource | | 3D models of the geology were commonly used as a guide for the | |
| interpretation of the mineralization. |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| estimation. | | Continuity is assumed to be from hole to hole. As the maximum spacing of | ||
| | The use of geology in guiding and controlling Mineral Resource estimation. | holes is 80m in the resources this appears to be a reasonable assumption. | ||
| | The factors affecting continuity both of grade and geology. | At all times the geology guided the continuity. No faults or other dislocations | ||
| that may influence the geological continuity are known within the resources. | ||||
| Dimensions | | The extent and variability of the Mineral Resource expressed as length (along | |
The widths of the mineralisation within the resources are fairly uniform. The |
| strike or otherwise), plan width, and depth below surface to the upper and | strike and dip extents of the mineralisation in the various resources is | |||
| lower limits of the Mineral Resource. | determined solely by drilling. | |||
| Estimation and | | The nature and appropriateness of the estimation technique(s) applied and | | The resources were estimated using Micromine software. The mineralization |
| modelling | key assumptions, including treatment of extreme grade values, domaining, | was wireframed at the cut off grades stated above. Where high grade | ||
| techniques | interpolation parameters and maximum distance of extrapolation from data | domains were noted these were subset from the overall wireframes. | ||
| points. If a computer assisted estimation method was chosen include a | | Where historic workings are also mapped these were also wireframed and | ||
| description of computer software and parameters used. | deducted from the resource. These estimates were validated against historic | |||
| | The availability of check estimates, previous estimates and/or mine | production records where known. | ||
| production records and whether the Mineral Resource estimate takes | | Geological models were used to constrain the mineralization models. The | ||
| appropriate account of such data. | method used is considered to be suitable for the estimation of Inferred | |||
| | The assumptions made regarding recovery of by-products. | Resources. More complex methods may be appropriate for resources of | ||
| | Estimation of deleterious elements or other non-grade variables of economic | higher category. | ||
| significance (eg sulphur for acid mine drainage characterisation). | | There is modest previous mining activity across most of the resources. | ||
| | In the case of block model interpolation, the block size in relation to the | These provide evidence of width, dip, strikes, etc. | ||
| average sample spacing and the search employed. | | Top cuts were not applied, however their influence on the wireframes was | ||
| | Any assumptions behind modelling of selective mining units. | reduced by domaining high grade zones separately. | ||
| | Any assumptions about correlation between variables. | | No data was available for reconciliation. The model was compared to the drill | |
| | Description of how the geological interpretation was used to control the | data directly on section using the geological features as a guide. Minor | ||
| resource estimates. | adjustments were made following this. | |||
| | Discussion of basis for using or not using grade cutting or capping. | |||
| | The process of validation, the checking process used, the comparison of | |||
| model data to drill hole data, and use of reconciliation data if available. | ||||
| Moisture | | Whether the tonnages are estimated on a dry basis or with natural moisture, | | The estimates are made on a dry basis as little information exists reliably |
| and the method of determination of the moisture content. | outlining the moisture contents. | |||
| Cut-off | | The basis of the adopted cut-off grade(s) or quality parameters applied. | | The lower cut off were arbitrarily assigned after a visual assessment of the |
| parameters | mineralization on cross sections. No upper cuts were applied, but their | |||
| potential influence was reduced by separately domaining any high grade | ||||
| areas. | ||||
| Mining factors | | Assumptions made regarding possible mining methods, minimum mining | | All resources are assumed to be openpittable. This is due to the oxide |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| or assumptions | dimensions and internal (or, if applicable, external) mining dilution. It is | nature of the upper parts of the resources and the relatively shallow nature of | ||
| always necessary as part of the process of determining reasonable prospects | the drilling to date. No mining studies have been made to date for any | |||
| for eventual economic extraction to consider potential mining methods, but | resource. | |||
| the assumptions made regarding mining methods and parameters when | ||||
| estimating Mineral Resources may not always be rigorous. Where this is the | ||||
| case, this should be reported with an explanation of the basis of the mining | ||||
| assumptions made. | ||||
| Metallurgical | | The basis for assumptions or predictions regarding metallurgical amenability. | | All mineralisation is assumed to be free milling on the basis of historic data. |
| factors or | It is always necessary as part of the process of determining reasonable | The Mt Stirling Well mineralization contains a significant amount of coarse | ||
| assumptions | prospects for eventual economic extraction to consider potential metallurgical | gold as noted in previous assay reports. Some visible gold was panned drill | ||
| methods, but the assumptions regarding metallurgical treatment processes | cuttings at Mt Stirling Well and also directly observed in historic workings. A | |||
| and parameters made when reporting Mineral Resources may not always be | significant proportion of gravity recoverable gold would be expected in any | |||
| rigorous. Where this is the case, this should be reported with an explanation | future processing. | |||
| of the basis of the metallurgical assumptions made. | ||||
| Environmen-tal | |
Assumptions made regarding possible waste and process residue disposal | | The assumed operations will have typical waste dumps as seen in many sites |
| factors or | options. It is always necessary as part of the process of determining | across Western Australia. These include dewatering and tailings disposal | ||
| assumptions | reasonable prospects for eventual economic extraction to consider the | facilities. | ||
| potential environmental impacts of the mining and processing operation. | | No assumed operation in the future will have an unusual impact on the | ||
| While at this stage the determination of potential environmental impacts, | environment. | |||
| particularly for a greenfields project, may not always be well advanced, the | ||||
| status of early consideration of these potential environmental impacts should | ||||
| be reported. Where these aspects have not been considered this should be | ||||
| reported with an explanation of the environmental assumptions made. | ||||
| Bulk density | | Whether assumed or determined. If assumed, the basis for the assumptions. | | No data relating to bulk densities were available and so these values have |
| If determined, the method used, whether wet or dry, the frequency of the | been assumed. An SG of 2.2t/m2 was assumed for all material. This reflects | |||
| measurements, the nature, size and representativeness of the samples. | the semi oxidised nature of most of the material. | |||
| | The bulk density for bulk material must have been measured by methods that | |||
| adequately account for void spaces (vugs, porosity, etc), moisture and | ||||
| differences between rock and alteration zones within the deposit. | ||||
| | Discuss assumptions for bulk density estimates used in the evaluation | |||
| process of the different materials. | ||||
| Classification | | The basis for the classification of the Mineral Resources into varying | | The classification of all resources as Inferred reflects various unknowns of the |
| confidence categories. | data. Despite this there is sufficient continuity of the mineralisation across all | |||
| | Whether appropriate account has been taken of all relevant factors (ie | resources. | ||
| relative confidence in tonnage/grade estimations, reliability of input data, | | As currently understood these estimates give a fair reflection of the | ||
| confidence in continuity of geology and metal values, quality, quantity and | resources. | |||
| _distribution of the data). _ |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| | Whether the result appropriately reflects the Competent Person’s view of the | As currently understood these estimates give a fair reflection of the | ||
| deposit. | resources. | |||
| Audits or | | The results of any audits or reviews of Mineral Resource estimates. | | The resources have received a number of peer reviews. No key issues were |
| reviews | raised. | |||
| Discussion of | | Where appropriate a statement of the relative accuracy and confidence level | | The classification of the resources as Inferred reflects the presently |
| relative | in the Mineral Resource estimate using an approach or procedure deemed | understood confidence in the continuity of dimensions and grade of the | ||
| accuracy/ | appropriate by the Competent Person. For example, the application of | resources. | ||
| confidence | statistical or geostatistical procedures to quantify the relative accuracy of the | | Various features require additional drilling. For example the coarse gold at | |
| resource within stated confidence limits, or, if such an approach is not | Mt Stirling Well needs additional sampling. In all cases the resources remain | |||
| deemed appropriate, a qualitative discussion of the factors that could affect | open, particularly down dip. | |||
| the relative accuracy and confidence of the estimate. | | A more rigorous statistical understanding of the mineralisation in the | ||
| | The statement should specify whether it relates to global or local estimates, | resources will be made following more detailed drilling. | ||
| and, if local, state the relevant tonnages, which should be relevant to | | The resources stated in this report relate to local estimates. Further drilling is | ||
| technical and economic evaluation. Documentation should include | warranted before any economic evaluation is made. | |||
| assumptions made and the procedures used. | | Details of assumptions used are stated in the report. | ||
| | These statements of relative accuracy and confidence of the estimate should | |||
| be compared withproduction data, where available. |
==> picture [183 x 37] intentionally omitted <==
Mt Keith Project
JORC Code, 2012 Edition – Table 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
| Criteria | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|
| Sampling | Nature and quality of sampling (eg cut channels, random chips, or specific |
| All data and results referred to in this report are historic, and date from the |
| techniques | specialised industry standard measurement tools appropriate to the minerals | late 1980s to the present day. This data has been judged to be reliable | |
| under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. |
| following independent t research, including discussions with previous operators and explorers in person. Samples were collected via Rotary Air Blast (RAB) and Reverse Circulation (RC) drill chips. |
|
| Aspects of the determination of mineralisation that are Material to the Public |
| All drilling yielded samples on a metre basis. RAB drilling samples were | |
| Report. | commonly composited into intervals of 4 or 5m, with selected individual or | ||
| In cases where ‘industry standard’ work has been done this would be |
2m resamples collected. Reverse Circulation (RC) drilling is utilised to | ||
| relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant |
| obtain 1 m samples which are riffle split, from which approx. 2-3 kg is pulverised to produce a 50 g charge for fire assay. Sample preparation method is total material dried and pulverized to nominally 85% passing 75 µm particle size. Gold analysis method is |
|
| disclosure of detailed information. | generally by 50g Fire Assay, with Atomic Absorption Spectrometry (AAS) | ||
| finish (DL 0.01 – UL 50 ppm Au). Samples exceeding the upper limit of the | |||
| method were automatically re-assayed utilizing a high grade gravimetric | |||
| method. | |||
| Drilling | Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, |
| RAB holes were typically 100mm in diameter, RC drilling usually 155mm in |
| techniques | auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard | diameter. RC drilling was via a face sampling hammer. | |
| tube, depth of diamond tails, face-sampling bit or other type, whether core is | |||
| _oriented and if so, by what method, etc). _ | |||
| Drill sample | Method of recording and assessing core and chip sample recoveries and |
| Recoveries were logged onto paper logs during drilling. Recoveries were |
| recovery | results assessed. | visually assessed. | |
| Measures taken to maximise sample recovery and ensure representative |
| Sample recoveries were maximised in RAB and RC drilling via collecting the | |
| nature of the samples. | samples in a cyclone prior to sub sampling. RAB drillholes were stopped if | ||
| Whether a relationship exists between sample recovery and grade and |
significant water flows were encountered. | ||
| whether sample bias may have occurred due topreferential loss/gain of | | No relationshipappears from the data between sample recoveryandgrade of |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| fine/coarse material. | the samples. | |||
| Logging | | Whether core and chip samples have been geologically and geotechnically | | All drillholes were geologically logged. This logging appears to be of high |
| logged to a level of detail to support appropriate Mineral Resource estimation, | quality and suitable for use in further studies. | |||
| mining studies and metallurgical studies. | | Logging is qualitative in nature. | ||
| | Whether logging is qualitative or quantitative in nature. Core (or costean, | | All samples / intersections are logged. 100% of relevant length intersections | |
| channel, etc) photography. | are logged. | |||
| | The total length andpercentage of the relevant intersections logged. | |||
| Sub-sampling | | If core, whether cut or sawn and whether quarter, half or all core taken. | | Non-core RC drill chip sample material is riffle split, where sample is dry. In |
| techniques and | |
If non-core, whether riffled, tube sampled, rotary split, etc and whether | case of wet sample a representative ‘grab’ sample method is utilized. | |
| sample | sampled wet or dry. | | The sample preparation technique is total material dried and pulverized to | |
| preparation | | For all sample types, the nature, quality and appropriateness of the sample | nominally 85% passing 75 µm particle size, from which a 50g charge was | |
| preparation technique. | representatively riffle split off, for assay. | |||
| | Quality control procedures adopted for all sub-sampling stages to maximise | | Standard check (known value) sample were not used in all cases. Where | |
| representivity of samples. | used the known values correspond closely with the expected values. A | |||
| | Measures taken to ensure that the sampling is representative of the in situ | duplicate (same sample duplicated) were commonly inserted for every 20 or | ||
| material collected, including for instance results for field duplicate/second-half | 30 samples taken. | |||
| sampling. | | RC samples were submitted to commercial laboratories weighing | ||
| | Whether sample sizes are appropriate to the grain size of the material being | appxroximately 2-3kg. These are considered appropriate for this material. | ||
| sampled. | | The material is generally fine grained and so the samples submitted would be | ||
| appropriate. | ||||
| Quality of | | The nature, quality and appropriateness of the assaying and laboratory | | Various independent laboratories have assayed samples from the projects |
| assay data and | procedures used and whether the technique is considered partial or total. | over the years. In general they were internationally accredited for QAQC in | ||
| laboratory tests | | For geophysical tools, spectrometers, handheld XRF instruments, etc, the | mineral analysis. | |
| parameters used in determining the analysis including instrument make and | | No geophysical tools have been used to date. | ||
| model, reading times, calibrations factors applied and their derivation, etc. | | The laboratories inserted blank and check samples for each batch of samples | ||
| | Nature of quality control procedures adopted (eg standards, blanks, | analysed and reports these accordingly with all results. | ||
| duplicates, external laboratory checks) and whether acceptable levels of | ||||
| accuracy (ie lack of bias) andprecision have been established. | ||||
| Verification of | | The verification of significant intersections by either independent or | | Selected significant intersections were resampled from original remnant |
| sampling and | alternative company personnel. | sample material and analysed again. | ||
| assaying | | The use of twinned holes. | | No twinned holes have been used to date. |
| | Documentation of primary data, data entry procedures, data verification, data | | Documentation of primary data is field log sheets (hand written). Primary | |
| storage (physical and electronic) protocols. | data is entered into application specific data base. The data base is | |||
| | Discuss any adjustment to assay data. | subjected to data verification program, erroneous data is corrected. Data | ||
| storage is retention ofphysical logsheet,two electronic backupstorage |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| devices and primary electronic database. | ||||
| Location of | | Accuracy and quality of surveys used to locate drill holes (collar and down- | | Survey control used is by hand held GPS. No down hole surveys were |
| data points | hole surveys), trenches, mine workings and other locations used in Mineral | completed to date. As the areas contain drillholes to no more than 100m | ||
| Resource estimation. | significant deviations are not expected. | |||
| | Specification of the grid system used. | | Grid systems are various local grid converted to MGA coordinates. | |
| | Quality and adequacy of topographic control. | | Topographic control is accurate to +/- 0.5 m. | |
| Data spacing | | Data spacing for reporting of Exploration Results. | | The drill spacing is variable but generally no greater than 200m by 40m, with |
| and distribution | | Whether the data spacing and distribution is sufficient to establish the degree | some areas infilled to 40m by 40m and 40m by 20m. | |
| of geological and grade continuity appropriate for the Mineral Resource and | | The infilled areas have drilling density sufficient for JORC Inferred category. | ||
| Ore Reserve estimation procedure(s) and classifications applied. | Further infill will be required for other categories. | |||
| | Whether sample compositing has been applied. | | Apart from the reconnaissance RAB drilling, no sample compositing has been | |
| used. | ||||
| Orientation of | | Whether the orientation of sampling achieves unbiased sampling of possible | | Apart from some vertical reconnaissance RAB drilling, the orientation of the |
| data in relation | structures and the extent to which this is known, considering the deposit type. | drilling is approximately at right angles to the known mineralisation and so | ||
| to geological | | If the relationship between the drilling orientation and the orientation of key | gives a fair representation of the mineralisation intersected. | |
| structure | mineralised structures is considered to have introduced a sampling bias, this | | No sampling bias is believed to occur due to the orientation of the drilling. | |
| should be assessed and reported if material. | ||||
| Sample | | The measures taken to ensure sample security. | | Samples were delivered to the laboratory in batches at regular intervals. |
| security | These are temporarily stored in a secure facility after drilling and before | |||
| delivery | ||||
| Audits or | | The results of any audits or reviews of sampling techniques and data. | | The company engages independent consultants who regularly audit the data |
| reviews | for inconsistencies and other issues. None have been reported to date. |
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Mineral | | Type, reference name/number, location and ownership including agreements | | The details relating to the tenements are located in the Tenement Status |
| tenement and | or material issues with third parties such as joint ventures, partnerships, | section of this report. | ||
| land tenure | overriding royalties, native title interests, historical sites, wilderness or | |||
| status | national park and environmental settings. | Details concerning tenements are described elsewhere in this report. | ||
| | The security of the tenure held at the time of reporting along with any known | |||
| impediments to obtaining a licence to operate in the area. |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Exploration | | Acknowledgment and appraisal of exploration by other parties. | | All work relating to previous exploration contained within this report was |
| done by other | completed by other parties. Details are included in the references. | |||
| parties | ||||
| Geology | | Deposit type, geological setting and style of mineralisation. | | Details of the geology are found elsewhere in this report. |
| Drill hole | | A summary of all information material to the understanding of the exploration | | Details of the drilling, etc are found within the various tables and diagrams |
| Information | results including a tabulation of the following information for all Material drill | elsewhere in this report. | ||
| holes: | | No material information, results or data have been excluded. | ||
o easting and northing of the drill hole collar |
||||
o elevation or RL (Reduced Level – elevation above sea level in metres) of |
||||
| the drill hole collar | ||||
o dip and azimuth of the hole |
||||
o down hole length and interception depth |
||||
o hole length. |
No material information has been excluded. | |||
| | If the exclusion of this information is justified on the basis that the information | |||
| is not Material and this exclusion does not detract from the understanding of | ||||
| the report, the Competent Person should clearly explain why this is the case. | ||||
| Data | | In reporting Exploration Results, weighting averaging techniques, maximum | | Weighted averages were calculated by a simple weighting of from and to |
| aggregation | and/or minimum grade truncations (eg cutting of high grades) and cut-off | distances down each hole. Most samples are 1 metre samples. No top cuts | ||
| methods | grades are usually Material and should be stated. | were applied. Lower cut-offs used were – Mt Keith 1g/t Au. | ||
| | Where aggregate intercepts incorporate short lengths of high grade results | | The drilling results table is shown elsewhere in this report. This shows the | |
| and longer lengths of low grade results, the procedure used for such | details of higher grade portions of the intersections. | |||
| aggregation should be stated and some typical examples of such | ||||
| aggregations should be shown in detail. | ||||
| | The assumptions used for any reporting of metal equivalent values should be | No metal equivalent used | ||
| clearly stated. | ||||
| Relationship | | These relationships are particularly important in the reporting of Exploration | | Details of geology, and selected cross sections are given elsewhere in this |
| between | Results. | report | ||
| mineralisation | | If the geometry of the mineralisation with respect to the drill hole angle is | | The mineralisation is steeply dipping and so drill widths will be exaggerated. |
| widths and | known, its nature should be reported. | The diagrams and tables elsewhere in this report indicate the nature of the | ||
| intercept | | If it is not known and only the down hole lengths are reported, there should | geometry of the mineralisation and drilling. | |
| lengths | be a clear statement to this effect (eg ‘down hole length, true width not | |||
| known’). | Drilling results tabulated elsewhere in this report show drill widths not | |||
| true widths. | ||||
| Diagrams | | Appropriate maps and sections (with scales) and tabulations of intercepts | | Details of geology, and selected cross sections are given elsewhere in this |
| should be included for any significant discovery being reported These should | report. |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| include, but not be limited to a plan view of drill hole collar locations and | ||||
| appropriate sectional views. | ||||
| Balanced | | Where comprehensive reporting of all Exploration Results is not practicable, | | Details of the results, drilling, etc are reported elsewhere in this report. |
| reporting | representative reporting of both low and high grades and/or widths should be | |||
| practiced to avoid misleading reporting of Exploration Results. | ||||
| Other | | Other exploration data, if meaningful and material, should be reported | | Details of geology, and selected cross sections are given elsewhere in this |
| substantive | including (but not limited to): geological observations; geophysical survey | report. | ||
| exploration | results; geochemical survey results; bulk samples – size and method of | |||
| data | treatment; metallurgical test results; bulk density, groundwater, geotechnical | |||
| and rock characteristics; potential deleterious or contaminating substances. | ||||
| Further work | | The nature and scale of planned further work (eg tests for lateral extensions | | Proposed work included drilling of selected twin holes followed by infill and |
| or depth extensions or large-scale step-out drilling). | step out RC drilling across all resources. The aim of such work is to increase | |||
| | Diagrams clearly highlighting the areas of possible extensions, including the | confidence in the data and also to test for extensions to the known resources. | ||
| main geological interpretations and future drilling areas, provided this | Budgets are being prepared for this work at present. | |||
| information is not commercially sensitive. | | In addition a significant number of additional prospects are known to exist | ||
| within the projects as defined by previous RAB and RC drilling intersections. | ||||
| These will form the second phase of exploration. | ||||
| | Various maps and diagrams are presented elsewhere in this report to | |||
| highlight possible extensions and new targets. |
Section 3 Estimation and Reporting of Mineral Resources
| Section 3 Estimation and Reporting of Mineral Resources | Section 3 Estimation and Reporting of Mineral Resources | Section 3 Estimation and Reporting of Mineral Resources | ||
|---|---|---|---|---|
| (Criterialistedinsection 1, andwhererelevantinsection 2, also apply to this section.) | ||||
| Criteria | JORC Code explanation | Commentary | ||
| Database | | Measures taken to ensure that data has not been corrupted by, for example, | | The database was checked against the hard copy originals for validity. |
| integrity | transcription or keying errors, between its initial collection and its use for | | Data validation checked consistency of features such as hole depth, | |
| Mineral Resource estimation purposes. | consistent down hole surveys, duplicate assays, etc. | |||
| | Data validationprocedures used. | |||
| Site visits | | Comment on any site visits undertaken by the Competent Person and the | | The competent person made site visits to all projects during the course of the |
| outcome of those visits. | last year. | |||
| | If no site visits have been undertaken indicate why this is the case. | |||
| Geological | | Confidence in (or conversely, the uncertainty of ) the geological interpretation | | The geology of the various resources is reasonably well documented and |
| interpretation | of the mineral deposit. | understood. Most are in areas of outcrop and so direct observation of dips, | ||
| | Nature of the data used and of any assumptions made. | strikes, widths, etc have been made. | ||
| | The effect, if any, of alternative interpretations on Mineral Resource | | 3D models of the geology were commonly used as a guide for the | |
| interpretation of the mineralization. |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| estimation. | | Continuity is assumed to be from hole to hole. As the maximum spacing of | ||
| | The use of geology in guiding and controlling Mineral Resource estimation. | holes is 40m in the resources this appears to be a reasonable assumption. | ||
| | The factors affecting continuity both of grade and geology. | At all times the geology guided the continuity. No faults or other dislocations | ||
| that may influence the geological continuity are known within the resources. | ||||
| Dimensions | | The extent and variability of the Mineral Resource expressed as length (along | |
The widths of the mineralisation within the resources are fairly uniform. The |
| strike or otherwise), plan width, and depth below surface to the upper and | strike and dip extents of the mineralisation in the various resources is | |||
| lower limits of the Mineral Resource. | determined solely by drilling. | |||
| Estimation and | | The nature and appropriateness of the estimation technique(s) applied and | | The resources were estimated using Micromine software. The mineralization |
| modelling | key assumptions, including treatment of extreme grade values, domaining, | was wireframed at the cut off grades stated above. Where high grade | ||
| techniques | interpolation parameters and maximum distance of extrapolation from data | domains were noted these were subset from the overall wireframes. | ||
| points. If a computer assisted estimation method was chosen include a | | Where historic workings are also mapped these were also wireframed and | ||
| description of computer software and parameters used. | deducted from the resource. These estimates were validated against historic | |||
| | The availability of check estimates, previous estimates and/or mine | production records where known. | ||
| production records and whether the Mineral Resource estimate takes | | Geological models were used to constrain the mineralization models. The | ||
| appropriate account of such data. | method used is considered to be suitable for the estimation of Inferred | |||
| | The assumptions made regarding recovery of by-products. | Resources. More complex methods may be appropriate for resources of | ||
| | Estimation of deleterious elements or other non-grade variables of economic | higher category. | ||
| significance (eg sulphur for acid mine drainage characterisation). | | There is modest previous mining activity across most of the resources. | ||
| | In the case of block model interpolation, the block size in relation to the | These provide evidence of width, dip, strikes, etc. | ||
| average sample spacing and the search employed. | | Top cuts were not applied, however their influence on the wireframes was | ||
| | Any assumptions behind modelling of selective mining units. | reduced by domaining high grade zones separately. | ||
| | Any assumptions about correlation between variables. | | No data was available for reconciliation. The model was compared to the drill | |
| | Description of how the geological interpretation was used to control the | data directly on section using the geological features as a guide. Minor | ||
| resource estimates. | adjustments were made following this. | |||
| | Discussion of basis for using or not using grade cutting or capping. | | The geology was interpreted onto drill sections and wireframed to constrain | |
| | The process of validation, the checking process used, the comparison of | the mineralisation. | ||
| model data to drill hole data, and use of reconciliation data if available. | | Low grade cut offs were used to define the outline of the mineralisation. Top | ||
| cuts were not applied due to a lack of statistical data but were instead | ||||
| constrained by wireframes as to not effect the lower grade haloes. | ||||
| | The interpretations and wireframes were checked manually against the | |||
| interpreted cross sections for inconsistencies. | ||||
| Moisture | | Whether the tonnages are estimated on a dry basis or with natural moisture, | | The estimates are made on a dry basis as little information exists reliably |
| and the method of determination of the moisture content. | outlining the moisture contents. | |||
| Cut-off | | The basis of the adopted cut-offgrade(s) orquality parameters applied. | | The lower cut off were arbitrarilyassigned after a visual assessment of the |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| parameters | mineralization on cross sections. No upper cuts were applied, but their | |||
| potential influence was reduced by separately domaining any high grade | ||||
| areas. | ||||
| Mining factors | | Assumptions made regarding possible mining methods, minimum mining | | All resources are assumed to be open pittable. This is due to the oxide |
| or assumptions | dimensions and internal (or, if applicable, external) mining dilution. It is | nature of the upper parts of the resources and the relatively shallow nature of | ||
| always necessary as part of the process of determining reasonable prospects | the drilling to date. No mining studies have been made to date for any | |||
| for eventual economic extraction to consider potential mining methods, but | resource. | |||
| the assumptions made regarding mining methods and parameters when | ||||
| estimating Mineral Resources may not always be rigorous. Where this is the | ||||
| case, this should be reported with an explanation of the basis of the mining | ||||
| assumptions made. | ||||
| Metallurgical | | The basis for assumptions or predictions regarding metallurgical amenability. | | All mineralisation is assumed to be free milling on the basis of historic data. |
| factors or | It is always necessary as part of the process of determining reasonable | Most other resource contain some visible gold either in panned drill cuttings | ||
| assumptions | prospects for eventual economic extraction to consider potential metallurgical | or directly observed in historic workings. A proportion of gravity recoverable | ||
| methods, but the assumptions regarding metallurgical treatment processes | gold would be expected in any future processing. | |||
| and parameters made when reporting Mineral Resources may not always be | ||||
| rigorous. Where this is the case, this should be reported with an explanation | ||||
| of the basis of the metallurgical assumptions made. | ||||
| Environmental | | Assumptions made regarding possible waste and process residue disposal | | The assumed operations will have typical waste dumps as seen in many sites |
| factors or | options. It is always necessary as part of the process of determining | across Western Australia. These include dewatering and tailings disposal | ||
| assumptions | reasonable prospects for eventual economic extraction to consider the | facilities. | ||
| potential environmental impacts of the mining and processing operation. | | No assumed operation in the future will have an unusual impact on the | ||
| While at this stage the determination of potential environmental impacts, | environment. | |||
| particularly for a greenfields project, may not always be well advanced, the | ||||
| status of early consideration of these potential environmental impacts should | ||||
| be reported. Where these aspects have not been considered this should be | ||||
| reported with an explanation of the environmental assumptions made. | ||||
| Bulk density | | Whether assumed or determined. If assumed, the basis for the assumptions. | | No bulk density data exists at Mt Keith, and so bulk densities were assumed |
| If determined, the method used, whether wet or dry, the frequency of the | based on experience in other similar deposits in WA. An SG of 2.2t/m2 was | |||
| measurements, the nature, size and representativeness of the samples. | assumed for all material. This reflects the semi oxidised nature of most of the | |||
| | The bulk density for bulk material must have been measured by methods that | material. | ||
| adequately account for void spaces (vugs, porosity, etc), moisture and | All bulk density data at Mt Keith were assumed from experience |
|||
| differences between rock and alteration zones within the deposit. | elsewhere in the region. | |||
| | Discuss assumptions for bulk density estimates used in the evaluation | |||
| process of the different materials. | An assumed SG of 2.2 has been assumed for all material |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Classification | | The basis for the classification of the Mineral Resources into varying | | The classification of all resources as Inferred reflects various unknowns of the |
| confidence categories. | data. Despite this there is sufficient continuity of the mineralisation across all | |||
| | Whether appropriate account has been taken of all relevant factors (ie | resources. | ||
| relative confidence in tonnage/grade estimations, reliability of input data, | | As currently understood these estimates give a fair reflection of the | ||
| confidence in continuity of geology and metal values, quality, quantity and | resources. | |||
| distribution of the data). | ||||
| | Whether the result appropriately reflects the Competent Person’s view of the | The result is approporiate in the view of the competent person. | ||
| deposit. | ||||
| Audits or | | The results of any audits or reviews of Mineral Resource estimates. | | The resources have received a number of peer reviews. No key issues were |
| reviews | raised. | |||
| Discussion of | | Where appropriate a statement of the relative accuracy and confidence level | | The classification of the resources as Inferred reflects the presently |
| relative | in the Mineral Resource estimate using an approach or procedure deemed | understood confidence in the continuity of dimensions and grade of the | ||
| accuracy/ | appropriate by the Competent Person. For example, the application of | resources. | ||
| confidence | statistical or geostatistical procedures to quantify the relative accuracy of the | | Various features require additional drilling. In all cases the resources remain | |
| resource within stated confidence limits, or, if such an approach is not | open, particularly down dip. | |||
| deemed appropriate, a qualitative discussion of the factors that could affect | | A more rigorous statistical understanding of the mineralisation in the | ||
| the relative accuracy and confidence of the estimate. | resources will be made following more detailed drilling. | |||
| | The statement should specify whether it relates to global or local estimates, | | The resources stated in this report relate to local estimates. Further drilling is | |
| and, if local, state the relevant tonnages, which should be relevant to | warranted before any economic evaluation is made. | |||
| technical and economic evaluation. Documentation should include assumptions made and the procedures used. |
| Details of assumptions used are stated in the report. | ||
| | These statements of relative accuracy and confidence of the estimate should | |||
| be compared withproduction data, where available. |
==> picture [183 x 37] intentionally omitted <==
Malcolm Project
JORC Code, 2012 Edition – Table 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
| Criteria | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|
| Sampling | Nature and quality of sampling (eg cut channels, random chips, or specific |
| All data and results referred to in this report are historic, and date from the |
| techniques | specialised industry standard measurement tools appropriate to the minerals | late 1980s to the present day. This data has been judged to be reliable | |
| under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. |
| following independent t research, including discussions with previous operators and explorers in person. Samples were collected via Rotary Air Blast (RAB) and Reverse Circulation (RC) drill chips. A minor number of diamond drillholes (DD) were drilled at |
|
| Aspects of the determination of mineralisation that are Material to the Public |
Malcolm. | ||
| Report. | | All drilling yielded samples on a metre basis. RAB drilling samples were | |
| In cases where ‘industry standard’ work has been done this would be |
commonly composited into intervals of 4 or 5m, with selected individual or | ||
| relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant |
2m resamples collected. Reverse Circulation (RC) drilling is utilised to obtain 1 m samples which are riffle split, from which approx. 2-3 kg is pulverised to produce a 50 g charge for fire assay. Diamond core is sawn in half before crushing, pulverising and assaying. |
||
| disclosure of detailed information. | | Sample preparation method is total material dried and pulverized to | |
| nominally 85% passing 75 µm particle size. Gold analysis method is | |||
| generally by 50g Fire Assay, with Atomic Absorption Spectrometry (AAS) | |||
| finish (DL 0.01 – UL 50 ppm Au). Samples exceeding the upper limit of the | |||
| method were automatically re-assayed utilizing a high grade gravimetric | |||
| method. | |||
| Drilling | Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, |
| RAB holes were typically 100mm in diameter, RC drilling usually 155mm in |
| techniques | auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard | diameter; diamond drilling was either NQ (50mm) or HQ (63mm). Triple tube | |
| tube, depth of diamond tails, face-sampling bit or other type, whether core is | coring was used in oxide zones. Core was orientated where possible via | ||
| oriented and if so, by what method, etc). | spear to mark the bottom of the hole. RC drilling was via a face sampling | ||
| hammer. | |||
| Drill sample | Method of recording and assessing core and chip sample recoveries and |
| Recoveries were logged onto paper logs during drilling. Recoveries were |
| recovery | results assessed. | visually assessed. |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| | Measures taken to maximise sample recovery and ensure representative | | Sample recoveries were maximised in RAB and RC drilling via collecting the | |
| nature of the samples. | samples in a cyclone prior to sub sampling. Diamond drilling used drilling | |||
| | Whether a relationship exists between sample recovery and grade and | muds to reduce loss of core in oxide zones and careful monitoring of the | ||
| whether sample bias may have occurred due to preferential loss/gain of | pumping of drilling fluids. RAB drillholes were stopped if significant water | |||
| fine/coarse material. | flows were encountered. | |||
| | No relationship appears from the data between sample recovery and grade of | |||
| the samples. | ||||
| Logging | | Whether core and chip samples have been geologically and geotechnically | | All drillholes were geologically logged, whilst the diamond holes at Malcolm |
| logged to a level of detail to support appropriate Mineral Resource estimation, | also have geotechnical logs. This logging appears to be of high quality and | |||
| mining studies and metallurgical studies. | suitable for use in further studies. | |||
| | Whether logging is qualitative or quantitative in nature. Core (or costean, | | Logging is qualitative in nature. | |
| channel, etc) photography. | | All samples / intersections are logged. 100% of relevant length intersections | ||
| | The total length and percentage of the relevant intersections logged. | are logged. | ||
| Sub-sampling | | If core, whether cut or sawn and whether quarter, half or all core taken. | | Non-core RC drill chip sample material is riffle split, where sample is dry. In |
| techniques and | |
If non-core, whether riffled, tube sampled, rotary split, etc and whether | case of wet sample a representative ‘grab’ sample method is utilized. | |
| sample | sampled wet or dry. | | The sample preparation technique is total material dried and pulverized to | |
| preparation | | For all sample types, the nature, quality and appropriateness of the sample | nominally 85% passing 75 µm particle size, from which a 50g charge was | |
| preparation technique. | representatively riffle split off, for assay. | |||
| | Quality control procedures adopted for all sub-sampling stages to maximise | | Standard check (known value) sample were not used in all cases. Where | |
| representivity of samples. | used the known values correspond closely with the expected values. A | |||
| | Measures taken to ensure that the sampling is representative of the in situ | duplicate (same sample duplicated) were commonly inserted for every 20 or | ||
| material collected, including for instance results for field duplicate/second-half | 30 samples taken. | |||
| sampling. | Routine standards and duplicates were used to check for accuracy and |
|||
| | Whether sample sizes are appropriate to the grain size of the material being | precision of the results. | ||
| sampled. | ||||
| The grain size is generally fine and so the sample size is appropriate. | ||||
| Quality of | | The nature, quality and appropriateness of the assaying and laboratory | | Various independent laboratories have assayed samples from the project |
| assay data and | procedures used and whether the technique is considered partial or total. | over the years. In general they were internationally accredited for QAQC in | ||
| laboratory tests | | For geophysical tools, spectrometers, handheld XRF instruments, etc, the | mineral analysis. | |
| parameters used in determining the analysis including instrument make and | | No geophysical tools have been used to date. | ||
| model, reading times, calibrations factors applied and their derivation, etc. | | The laboratories inserted blank and check samples for each batch of samples | ||
| | Nature of quality control procedures adopted (eg standards, blanks, | analysed and reports these accordingly with all results. | ||
| duplicates, external laboratory checks) and whether acceptable levels of | ||||
| accuracy (ie lack of bias) andprecision have been established. | ||||
| Verification of | | The verification of significant intersections by either independent or | | Selected significant intersections were resampled from original remnant |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| sampling and | alternative company personnel. | sample material and analysed again. | ||
| assaying | | The use of twinned holes. | | No twinned holes have been used to date. |
| | Documentation of primary data, data entry procedures, data verification, data | | Documentation of primary data is field log sheets (hand written). Primary | |
| storage (physical and electronic) protocols. | data is entered into application specific data base. The data base is | |||
| | Discuss any adjustment to assay data. | subjected to data verification program, erroneous data is corrected. Data | ||
| storage is retention of physical log sheet, two electronic backup storage | ||||
| devices and primary electronic database. | ||||
| Location of | | Accuracy and quality of surveys used to locate drill holes (collar and down- | | Survey control used is hand held GPS. Down hole surveys were completed |
| data points | hole surveys), trenches, mine workings and other locations used in Mineral | on most diamond drillholes at Malcolm. These surveys were via a single shot | ||
| Resource estimation. | down hole tool. As the other drillholes were drilled to no more than 100m | |||
| | Specification of the grid system used. | significant deviations are not expected. | ||
| | Quality and adequacy of topographic control. | | Grid systems are various local grid converted to MGA coordinates. | |
| | Topographic control is accurate to +/- 0.5 m. | |||
| Data spacing | | Data spacing for reporting of Exploration Results. | | The drill spacing is variable but generally no greater than 200m by 40m, with |
| and distribution | | Whether the data spacing and distribution is sufficient to establish the degree | some areas infilled to 40m by 40m and 20m by 20m. | |
| of geological and grade continuity appropriate for the Mineral Resource and | | The infilled areas have drilling density sufficient for JORC Inferred category. | ||
| Ore Reserve estimation procedure(s) and classifications applied. | Further infill will be required for other categories. | |||
| | Whether sample compositing has been applied. | | Apart from the reconnaissance RAB drilling, no sample compositing has been | |
| used. | ||||
| Orientation of | | Whether the orientation of sampling achieves unbiased sampling of possible | | Apart from some vertical reconnaissance RAB drilling, the orientation of the |
| data in relation | structures and the extent to which this is known, considering the deposit type. | drilling is approximately at right angles to the known mineralisation and so | ||
| to geological | | If the relationship between the drilling orientation and the orientation of key | gives a fair representation of the mineralisation intersected. | |
| structure | mineralised structures is considered to have introduced a sampling bias, this | | No sampling bias is believed to occur due to the orientation of the drilling. | |
| should be assessed and reported if material. | ||||
| Sample | | The measures taken to ensure sample security. | | Samples were delivered to the laboratory in batches at regular intervals. |
| security | These are temporarily stored in a secure facility after drilling and before | |||
| delivery | ||||
| Audits or | | The results of any audits or reviews of sampling techniques and data. | | The company engages independent consultants who regularly audit the data |
| reviews | for inconsistencies and other issues. None have been reported to date. |
==> picture [183 x 37] intentionally omitted <==
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Mineral | | Type, reference name/number, location and ownership including agreements | | The details relating to the tenements are located in the Tenement Status |
| tenement and | or material issues with third parties such as joint ventures, partnerships, | section of this report. | ||
| land tenure | overriding royalties, native title interests, historical sites, wilderness or | |||
| status | national park and environmental settings. | Tenement details are described elsewhere in this report. | ||
| | The security of the tenure held at the time of reporting along with any known | |||
| impediments to obtaining a licence to operate in the area. | ||||
| Exploration | | Acknowledgment and appraisal of exploration by other parties. | | All work relating to previous exploration contained within this report was |
| done by other | completed by other parties. Details are included in the references. | |||
| parties | ||||
| Geology | | Deposit type, geological setting and style of mineralisation. | | Details of the geology are found elsewhere in this report. |
| Drill hole | | A summary of all information material to the understanding of the exploration | | Details of the drilling, etc are found within the various tables and diagrams |
| Information | results including a tabulation of the following information for all Material drill | elsewhere in this report. | ||
| holes: | | No material information, results or data have been excluded. | ||
o easting and northing of the drill hole collar |
||||
o elevation or RL (Reduced Level – elevation above sea level in metres) of |
||||
| the drill hole collar | ||||
o dip and azimuth of the hole |
||||
o down hole length and interception depth |
||||
o hole length. |
No materlai information has been excluded. | |||
| | If the exclusion of this information is justified on the basis that the information | |||
| is not Material and this exclusion does not detract from the understanding of | ||||
| the report, the Competent Person should clearly explain why this is the case. | ||||
| Data | | In reporting Exploration Results, weighting averaging techniques, maximum | | Weighted averages were calculated by a simple weighting of from and to |
| aggregation | and/or minimum grade truncations (eg cutting of high grades) and cut-off | distances down each hole. Most samples are 1 metre samples. No top cuts | ||
| methods | grades are usually Material and should be stated. | were applied. Lower cot-offs used were – Malcolm 1g/t Au. | ||
| | Where aggregate intercepts incorporate short lengths of high grade results | | The drilling results are shown tabulated elsewhere in this report. | |
| and longer lengths of low grade results, the procedure used for such | ||||
| aggregation should be stated and some typical examples of such | ||||
| aggregations should be shown in detail. | No metal equivalents have been used | |||
| | The assumptions used for any reporting of metal equivalent values should be | |||
| clearly stated. | ||||
| Relationship | | These relationships are particularly important in the reporting of Exploration | | Details of geology, and selected cross sections are given elsewhere in this |
| between | Results. | report |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| mineralisation | | If the geometry of the mineralisation with respect to the drill hole angle is | | The steep dipping nature of the mineralisation means that steeply inclined |
| widths and | known, its nature should be reported. | drillholes will show exaggerated widths. These are shown in the diagrams | ||
| intercept | | If it is not known and only the down hole lengths are reported, there should | and tables elsewhere in this report. | |
| lengths | be a clear statement to this effect (eg ‘down hole length, true width not | |||
| known’). | The drilling results shown elsewhere in this report are drill widths not | |||
| true widths. | ||||
| Diagrams | | Appropriate maps and sections (with scales) and tabulations of intercepts | | Details of geology, and selected cross sections are given elsewhere in this |
| should be included for any significant discovery being reported These should | report. | |||
| include, but not be limited to a plan view of drill hole collar locations and | ||||
| appropriate sectional views. | ||||
| Balanced | | Where comprehensive reporting of all Exploration Results is not practicable, | | Details of the results, drilling, etc are reported elsewhere in this report. |
| reporting | representative reporting of both low and high grades and/or widths should be | |||
| practiced to avoid misleading reporting of Exploration Results. | ||||
| Other | | Other exploration data, if meaningful and material, should be reported | | Details of geology, and selected cross sections are given elsewhere in this |
| substantive | including (but not limited to): geological observations; geophysical survey | report. | ||
| exploration | results; geochemical survey results; bulk samples – size and method of | |||
| data | treatment; metallurgical test results; bulk density, groundwater, geotechnical | |||
| and rock characteristics; potential deleterious or contaminating substances. | ||||
| Further work | | The nature and scale of planned further work (eg tests for lateral extensions | | Proposed work included drilling of selected twin holes followed by infill and |
| or depth extensions or large-scale step-out drilling). | step out RC drilling across all resources. The aim of such work is to increase | |||
| | Diagrams clearly highlighting the areas of possible extensions, including the | confidence in the data and also to test for extensions to the known resources. | ||
| main geological interpretations and future drilling areas, provided this | Budgets are being prepared for this work at present. | |||
| information is not commercially sensitive. | | In addition a significant number of additional prospects are known to exist | ||
| within the projects as defined by previous RAB and RC drilling intersections. | ||||
| These will form the second phase of exploration. | ||||
| | Various maps and diagrams are presented elsewhere in this report to | |||
| highlight possible extensions and new targets. |
Section 3 Estimation and Reporting of Mineral Resources
| Section 3 Estimation and Reporting of Mineral Resources | Section 3 Estimation and Reporting of Mineral Resources | ||
|---|---|---|---|
| (Criterialistedinsection 1, andwhererelevantinsection 2, also apply to this section.) | |||
| Criteria | JORC Code explanation | Commentary | |
| Database | Measures taken to ensure that data has not been corrupted by, for example, |
| The database was checked against the hard copy originals for validity. |
| integrity | transcription or keying errors, between its initial collection and its use for | | Data validation checked consistency of features such as hole depth, |
| Mineral Resource estimation purposes. | consistent down hole surveys, duplicate assays, etc. |
==> picture [183 x 37] intentionally omitted <==
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| | Data validationprocedures used. | |||
| Site visits | | Comment on any site visits undertaken by the Competent Person and the | | The competent person made site visits to all projects during the course of the |
| outcome of those visits. | last year. | |||
| | If no site visits have been undertaken indicate why this is the case. | |||
| Geological | | Confidence in (or conversely, the uncertainty of ) the geological interpretation | | The geology of the various resources is reasonably well documented and |
| interpretation | of the mineral deposit. | understood. Most are in areas of outcrop and so direct observation of dips, | ||
| | Nature of the data used and of any assumptions made. | strikes, widths, etc have been made. | ||
| | The effect, if any, of alternative interpretations on Mineral Resource | | 3D models of the geology were commonly used as a guide for the | |
| estimation. | interpretation of the mineralization. | |||
| | The use of geology in guiding and controlling Mineral Resource estimation. | | Continuity is assumed to be from hole to hole. As the maximum spacing of | |
| | The factors affecting continuity both of grade and geology. | holes is 40m in the resources this appears to be a reasonable assumption. | ||
| At all times the geology guided the continuity. No faults or other dislocations | ||||
| that may influence the geological continuity are known within the resources. | ||||
| Dimensions | | The extent and variability of the Mineral Resource expressed as length (along | |
The widths of the mineralisation within the resources are fairly uniform. The |
| strike or otherwise), plan width, and depth below surface to the upper and | strike and dip extents of the mineralisation in the various resources is | |||
| lower limits of the Mineral Resource. | determined solely by drilling. | |||
| Estimation and | | The nature and appropriateness of the estimation technique(s) applied and | | The resources were estimated using Micromine software. The mineralization |
| modelling | key assumptions, including treatment of extreme grade values, domaining, | was wireframed at the cut off grades stated above. Where high grade | ||
| techniques | interpolation parameters and maximum distance of extrapolation from data | domains were noted these were subset from the overall wireframes. | ||
| points. If a computer assisted estimation method was chosen include a | | Where historic workings are also mapped these were also wireframed and | ||
| description of computer software and parameters used. | deducted from the resource. These estimates were validated against historic | |||
| | The availability of check estimates, previous estimates and/or mine | production records where known. | ||
| production records and whether the Mineral Resource estimate takes | | Geological models were used to constrain the mineralization models. The | ||
| appropriate account of such data. | method used is considered to be suitable for the estimation of Inferred | |||
| | The assumptions made regarding recovery of by-products. | Resources. More complex methods may be appropriate for resources of | ||
| | Estimation of deleterious elements or other non-grade variables of economic | higher category. | ||
| significance (eg sulphur for acid mine drainage characterisation). | | There is modest previous mining activity across most of the resources. | ||
| | In the case of block model interpolation, the block size in relation to the | These provide evidence of width, dip, strikes, etc. | ||
| average sample spacing and the search employed. | | Top cuts were not applied, however their influence on the wireframes was | ||
| | Any assumptions behind modelling of selective mining units. | reduced by domaining high grade zones separately. | ||
| | Any assumptions about correlation between variables. | | No data was available for reconciliation. The model was compared to the drill | |
| | Description of how the geological interpretation was used to control the | data directly on section using the geological features as a guide. Minor | ||
| resource estimates. | adjustments were made following this. | |||
| | Discussion of basis for using or not using grade cutting or capping. | |||
| | Theprocess of validation, the checking process used, the comparison of | Lower grade cut offs were used to define the edges of the wireframes, |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| model data to drill hole data, and use of reconciliation data if available. | whilst the higher grades were not cut due to a lack of statistics. The | |||
| higher grade areas were wireframed separately so as not to affect the | ||||
| surrounding lower grade haloes. | ||||
| the wireframes were checked manually agains the cross sectional | ||||
| interpretations for consistency. Minor changes were made following this | ||||
| process. | ||||
| Moisture | | Whether the tonnages are estimated on a dry basis or with natural moisture, | | The estimates are made on a dry basis as little information exists reliably |
| and the method of determination of the moisture content. | outlining the moisture contents. | |||
| Cut-off | | The basis of the adopted cut-off grade(s) or quality parameters applied. | | The lower cut off were arbitrarily assigned after a visual assessment of the |
| parameters | mineralization on cross sections. No upper cuts were applied, but their | |||
| potential influence was reduced by separately domaining any high grade | ||||
| areas. | ||||
| Mining factors | | Assumptions made regarding possible mining methods, minimum mining | | All resources are assumed to be open pitable. This is due to the oxide nature |
| or assumptions | dimensions and internal (or, if applicable, external) mining dilution. It is | of the upper parts of the resources and the relatively shallow nature of the | ||
| always necessary as part of the process of determining reasonable prospects | drilling to date. No mining studies have been made to date for any resource. | |||
| for eventual economic extraction to consider potential mining methods, but | ||||
| the assumptions made regarding mining methods and parameters when | ||||
| estimating Mineral Resources may not always be rigorous. Where this is the | ||||
| case, this should be reported with an explanation of the basis of the mining | ||||
| assumptions made. | ||||
| Metallurgical | | The basis for assumptions or predictions regarding metallurgical amenability. | | All mineralisation is assumed to be free milling on the basis of historic data. |
| factors or | It is always necessary as part of the process of determining reasonable | Most other resource contain some visible gold either in panned drill cuttings | ||
| assumptions | prospects for eventual economic extraction to consider potential metallurgical | or directly observed in historic workings. A significant proportion of gravity | ||
| methods, but the assumptions regarding metallurgical treatment processes | recoverable gold would be expected in any future processing. | |||
| and parameters made when reporting Mineral Resources may not always be | ||||
| rigorous. Where this is the case, this should be reported with an explanation | ||||
| of the basis of the metallurgical assumptions made. | ||||
| Environmen-tal | |
Assumptions made regarding possible waste and process residue disposal | | The assumed operations will have typical waste dumps as seen in many sites |
| factors or | options. It is always necessary as part of the process of determining | across Western Australia. These include dewatering and tailings disposal | ||
| assumptions | reasonable prospects for eventual economic extraction to consider the | facilities. | ||
| potential environmental impacts of the mining and processing operation. | | No assumed operation in the future will have an unusual impact on the | ||
| While at this stage the determination of potential environmental impacts, | environment. | |||
| particularly for a greenfields project, may not always be well advanced, the | ||||
| status of early consideration of these potential environmental impacts should | ||||
| be reported. Where these aspects have not been considered this should be |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| reported with an explanation of the environmental assumptions made. | ||||
| Bulk density | | Whether assumed or determined. If assumed, the basis for the assumptions. | | No bulk density data were available. Bulk densities were assumed based on |
| If determined, the method used, whether wet or dry, the frequency of the | industry experience elsewhere in Western Australia. An SG of 2.2t/m2 was | |||
| measurements, the nature, size and representativeness of the samples. | assumed for all material. This reflects the semi oxidised nature of most of the | |||
| | The bulk density for bulk material must have been measured by methods that | material. | ||
| adequately account for void spaces (vugs, porosity, etc), moisture and | ||||
| differences between rock and alteration zones within the deposit. | An assumed SG of 2.2 has been assumed for all material based on | |||
| | Discuss assumptions for bulk density estimates used in the evaluation | experience elsewhere in this region. | ||
| process of the different materials. | ||||
| Classification | | The basis for the classification of the Mineral Resources into varying | | The classification of all resources as Inferred reflects various unknowns of the |
| confidence categories. | data. Despite this there is sufficient continuity of the mineralisation across all | |||
| | Whether appropriate account has been taken of all relevant factors (ie | resources. | ||
| relative confidence in tonnage/grade estimations, reliability of input data, | | As currently understood these estimates give a fair reflection of the | ||
| confidence in continuity of geology and metal values, quality, quantity and | resources. | |||
| distribution of the data). | ||||
| | Whether the result appropriately reflects the Competent Person’s view of the | The result is appropriate in the competent person’s view. | ||
| deposit. | ||||
| Audits or | | The results of any audits or reviews of Mineral Resource estimates. | | The resources have received a number of peer reviews. No key issues were |
| reviews | raised. | |||
| Discussion of | | Where appropriate a statement of the relative accuracy and confidence level | | The classification of the resources as Inferred reflects the presently |
| relative | in the Mineral Resource estimate using an approach or procedure deemed | understood confidence in the continuity of dimensions and grade of the | ||
| accuracy/ | appropriate by the Competent Person. For example, the application of | resources. | ||
| confidence | statistical or geostatistical procedures to quantify the relative accuracy of the | | Various features require additional drilling. In all cases the resources remain | |
| resource within stated confidence limits, or, if such an approach is not | open, particularly down dip. | |||
| deemed appropriate, a qualitative discussion of the factors that could affect | | A more rigorous statistical understanding of the mineralisation in the | ||
| the relative accuracy and confidence of the estimate. | resources will be made following more detailed drilling. | |||
| | The statement should specify whether it relates to global or local estimates, | | The resources stated in this report relate to local estimates. Further drilling is | |
| and, if local, state the relevant tonnages, which should be relevant to | warranted before any economic evaluation is made. | |||
| technical and economic evaluation. Documentation should include assumptions made and the procedures used. |
| Details of assumptions used are stated in the report. | ||
| | These statements of relative accuracy and confidence of the estimate should | |||
| be compared withproduction data, where available. |