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ALARA RESOURCES LIMITED — Capital/Financing Update 2016
Dec 14, 2016
64461_rns_2016-12-14_bc19767f-0032-4dcb-8842-e317ede7044a.pdf
Capital/Financing Update
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Alara Resources Limited A.B.N. 27 122 892 719 Level 11, 216 St Georges Tce Perth WA 6000, Australia GPO Box 2517 Perth WA 6831
Telephone | +61 8 9481 0389 Facsimile | +61 8 9463 6103 Web | www.alararesources.com Email | [email protected]
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ASX/MEDIA RELEASE
Thursday, 15 December 2016
Maiden Ore Reserve Al Hadeetha Copper-Gold Project
Perth: Australian-based minerals exploration and development company Alara Resources Limited (ASX: AUQ) ( Alara ) is pleased to announce its maiden Ore Reserve estimate for the Al Hadeetha Copper-Gold Project (the Project ) located in the Sultanate of Oman.
Commenting on the maiden Ore Reserve, Managing Director, Justin Richard said:
“Following the upgrade of the Washihi copper-gold resource statement in September, and in light of recent feedback from the Mining Authority, Alara are pleased to confirm an Ore Reserve for the Al Hadeetha Copper-Gold Project, underpinning a 1 Mtpa copper concentration plant over an initial 10-year mine life.”
Introduction
The Al Hadeetha Copper-Gold Project is located approximately 120 km south-west of the capital city Muscat, in the Sultanate of Oman.
The Project will be operated by Al Hadeetha Resources LLC ( AHR ) which is a joint venture between Alara Oman Operations Pty Ltd (wholly owned subsidiary of Alara Resources Ltd) and Al Hadeetha Investments LLC, a privately owned Omani company. The joint venture was formed in 2011 for the purpose of exploring and developing the mineral zones within the Washihi, Al Ajal and Mullaq licence areas.
The Project includes three (3) exploration licences (i.e. Washihi, Mullaq and Al Ajal) and entails development of the Washihi deposit by means of a single open pit mine and 1 Mtpa processing facility to produce copper concentrates for export to overseas and/or domestic smelters.
Figures 1 and 2 below show the licence areas and location of Washihi at the northern end of Oman.
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ASX Code | AUQ
Alara Resources Limited Telephone | +61 8 9481 0389 A.B.N. 27 122 892 719 Facsimile | +61 8 9463 6103 Level 11, 216 St Georges Tce Web | www.alararesources.com Perth WA 6000, Australia Email | [email protected] GPO Box 2517 Perth WA 6831
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Figure 1 Location – Washihi Exploration Licence
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ASX Code | AUQ
Alara Resources Limited Telephone | +61 8 9481 0389 A.B.N. 27 122 892 719 Facsimile | +61 8 9463 6103 Level 11, 216 St Georges Tce Web | www.alararesources.com Perth WA 6000, Australia Email | [email protected] GPO Box 2517 Perth WA 6831
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Figure 2 Washihi Mining Licence (pending) and Exploration Licence area
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JORC Mineral Resource Statement
The Ore Reserve estimate is based on the September 2016 mineral resource, as per Alara’s ASX announcement of 19 September 2016, and summarized in Table 1 below.
Table 1 – Washihi Copper Gold Mineral Resources @ 0.25% Cu Cut-off
| Resource Classification | Tonnes (Mt) | Cu (%) | Au (g/t) |
|---|---|---|---|
| Indicated | 12.4 | 0.89 | 0.22 |
| Inferred | 3.7 | 0.79 | 0.23 |
| Grand Total | 16.1 | 0.87 | 0.22 |
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ASX Code | AUQ
Alara Resources Limited A.B.N. 27 122 892 719 Level 11, 216 St Georges Tce Perth WA 6000, Australia GPO Box 2517 Perth WA 6831
Telephone | +61 8 9481 0389 Facsimile | +61 8 9463 6103 Web | www.alararesources.com Email | [email protected]
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JORC Ore Reserve Statement
The Ore Reserve estimate was prepared by Mining Focus Consultants Pty Ltd, an experienced and prominent mining engineering consultancy with appropriate base metal experience.
Indicated Resources were converted to a Probable Ore Reserve after the application of modifying factors, including pit optimization, mine design and an economic evaluation.
The Ore Reserve estimate, based on a 0.3% Cu cutoff, is summarized in Table 2.
Table 2: Washihi Ore Reserve
| Classification | Ore Reserve | Ore Reserve | |
|---|---|---|---|
| Tonnes (Mt) | Cu Grade (%) | Au Grade (g/t) | |
| Probable | 9.7 | 0.88 | 0.22 |
Detail of the modifying factors supporting the Ore Reserve is presented in Appendix 1 (JORC Code, 2012 Edition - Table 1).
This Ore Reserve estimate is based on a Feasibility Study (FS) undertaken by Alara during 2015-16. Contributions to the FS were made by a number of suitably qualified independent consultants, experts, vendors and contractors.
Pursuant to listing rule 5.9.1, following is a summary of material assumptions and information otherwise contained in Appendix 1:
Estimation Methodology
Sections were created at a distance of ~40m based on number of holes passing through or near the section. These sections were used to define a mineralized shell at a cut-off of 0.2% Cu, or natural break in assays. Digitized section polygons were used to create mineralized shell wireframe.
Length weighted composites of 1 metre were created using Datamine software. Composites were created within mineralized wireframe. Compositing was done on capped samples. Only blocks within interpreted Copper wireframe are reported.
Block model grades for Copper and Gold were estimated by ordinary kriging. Kriging neighbourhood analysis was carried out to optimize parameters for good confidence estimate. Beside ordinary kriging, ID2 was also tested.
Parent block size of 10 m in X direction, 10 m in Y direction and 5m in Z direction was created based on kriging neighbourhood analysis (‘KNA’) in Snowdens Supervisor software. The KNA exercise analyzed various block sizes with various search neighbourhood and variograms.
To preserve local grade variation, a search neighbourhood strategy with three search ellipse was used.
The block model has been validated through visual checks in section and plan view between block model and composites. Statistical validation checks were carried out to validate model. Swath plot has been generated and evaluated for different slice sizes and for all directions (X, Y, Z).
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ASX Code | AUQ
Alara Resources Limited A.B.N. 27 122 892 719 Level 11, 216 St Georges Tce Perth WA 6000, Australia GPO Box 2517 Perth WA 6831
Telephone | +61 8 9481 0389 Facsimile | +61 8 9463 6103 Web | www.alararesources.com Email | [email protected]
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Classification
Mineral Resource classification is based on geological and mineralization continuity, estimation quality and validation. The scorecard system was used whereby a 50% weight was assigned to estimation methodology, validation and quality of estimate and 50% on geological and mineralization continuity.
Estimation methodology included: kriging variance, regression slope, kriging efficiency, number of holes used to estimate a block, and number of composites used to estimate a block. The block model values for these five parameters were each converted into a score of up to 10 i.e. maximum of 50.
Areas of geological continuity and mineralization continuity was reviewed in plan and section, and areas of interpolation and extrapolation were identified. Areas were assigned: very high geological confidence (50 marks), reasonable to high geological confidence (40 marks) and lower geological confidence (30 marks). The sum of all these were calculated to give each block a score out of 100.
A block with 70 to 90 score is classified as Indicated and blocks with less than 70 score are classified as Inferred. Blocks above 70 score were used to create Indicated resource boundary.
Probable Ore Reserves are declared based on the Indicated Mineral Resources contained within the pit design that was developed for the Project.
Mining
The Project will be exploited by means of conventional open pit mining methods, comprising drill and blast, followed by load and haul, using contract mining.
A 5% mining dilution and a 95% mining recovery was applied and the mine production schedule indicates a maximum total material movement of 8Mtpa with an average 5.2: 1 waste to ore strip ratio.
Processing
The plant will have a name plate capacity of 1 Mtpa. Material will be fed to the ROM bin directly by truck and withdrawn by vibrating grizzly feeder to a single toggle jaw crusher.
Crushed material will be fed directly to the fine ore bin by vibratory feeder and conveyor to the two grinding mills operating in closed circuit with a discharge double deck screen, a cone crusher as SABC combination (SAG, ball mill and a cone crusher) and hydro cyclones. Cyclones overflow will gravitate to the flotation circuit.
Flotation allows for roughing/scavenging and cleaning cells for copper recovery. Overflow will gravitate to the trash screen and then into the two conditioning tanks where conditioning with the reagents will be undertaken in two stages.
The Rougher and Scavenger concentrates will flow to the Regrind Mill Discharge Sump from which the slurry will be pumped to the Regrind Cyclones for classification. Cyclone overflow will feed the Cleaner Circuit while the underflow (coarse stream) will return to the Regrind Mill.
The Scavenger Tailings will be pumped to the tailings storage facility.
Cleaner concentrate will be pumped to a thickener prior to filtration. The dewatered concentrate will report to the concentrate storage.
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ASX Code | AUQ
Alara Resources Limited Telephone | +61 8 9481 0389 A.B.N. 27 122 892 719 Facsimile | +61 8 9463 6103 Level 11, 216 St Georges Tce Web | www.alararesources.com Perth WA 6000, Australia Email | [email protected] GPO Box 2517 Perth WA 6831
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Tailings will discharge to a tailings dam, allowing natural filtration with clean water to be pumped back to the process plant.
Based on metallurgical testwork, the processing recovery for Cu and Au were estimated at 92% and 30% respectively.
Regulatory
Alara is currently compliant with all legal and regulatory requirements. All government permits, licenses and statutory approvals are either granted or in the process of being granted.
Financial Modelling
The mine plan that formed the basis of the financial modelling, and upon which the Ore Reserve was predicated, includes approximately 3.5% of Inferred Resources that is mined during the process of accessing the Indicated Resources. This Inferred Resource is not considered material to the value of the Project and is not included as part of the Probable Ore Reserve.
Operating costs of $26.95/t are underpinned by local costs, local operators and test work showing good recoveries with minimal quantities of reagents.
A Copper price and Gold price of US$5,593/t and US$1,200/oz respectively were adopted as the base case for the financial modelling, which showed that the Project will deliver a Net Present Value (NPV9%) of US$39 million (AUD$52m)and an Internal Rate of Return (IRR) of 26%.
Total preproduction capital cost is estimated at approximately US$50 million, including mining, processing, surface infrastructure and working capital[1] .
1 Refer Alara’s ASX announcement dated 31 March 2016 for further detail on capex and opex estimates.
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ASX Code | AUQ
Alara Resources Limited A.B.N. 27 122 892 719 Level 11, 216 St Georges Tce Perth WA 6000, Australia GPO Box 2517 Perth WA 6831
Telephone | +61 8 9481 0389 Facsimile | +61 8 9463 6103 Web | www.alararesources.com Email | [email protected]
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Competent Person Statements
This announcement is based on information compiled by Mr Shanker Madan, who is a Member of the Australasian Institute of Mining and Metallurgy, and consultant to Alara Resources. Mr Madan has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration, and to the activity he is undertaking to qualify as a Competent Person as defined in the JORC Code, 2012 edition. Mr Madan consents to the inclusion in the announcement of the matters based on his information in the form and context in which it appears.
The information in this announcement that relates to JORC Resources of the Al Hadeetha Copper-Gold Project (Oman) is based on, and fairly represents, information and supporting documentation prepared by Mr Ravi Sharma, who is a Chartered Member of The Australasian Institute of Mining and Metallurgy, and a consultant to Alara Resources. Mr Sharma has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration, and to the activity he is undertaking to qualify as a Competent Person as defined in the JORC Code, 2012 edition. Mr Sharma approves and consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
The information in this announcement that relates to Ore Reserve (referred to in Table 2 of this announcement) of the Al Hadeetha Project was compiled by Mr Harry Warries, who is a Fellow of the Australasian Institute of Mining and Metallurgy, and a consultant to Alara Resources. Mr Warries has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration, and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves.’ In assessing the appropriateness of the Ore Reserve estimate, Mr Warries has relied on various reports, from both internal and external sources, in either draft or final version, which form part of or contribute to the Al Hadeetha Project Feasibility Study. These reports are understood to be compiled by persons considered by Alara to be competent in the field on which they have reported. Mr Warries consents to the inclusion in the report of the information in the form and context in which it appears.
For further information, please contact: Justin Richard T | +61 8 9481 0389 Managing Director E | [email protected] Elizabeth Hunt T | +61 8 9481 0389 Company Secretary E | [email protected]
About Alara Resources
Alara Resources Limited (ASX: AUQ) is an Australian minerals exploration company with a portfolio of projects in Saudi Arabia and Oman. Alara has completed a Definitive Feasibility Study on the Khnaiguiyah Zinc-Copper Project in Saudi Arabia, an Advanced Scoping Study on the Daris and Al Hadeetha Copper-Gold Projects in Oman and a Feasibility Study for the Al Hadeetha Project, Washihi deposit. The Company is transitioning to establish itself as a base and precious metals mine development and production company. For more information, please visit: www.alararesources.com
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ASX Code | AUQ
APPENDIX 1 - JORC Code 2012 Table 1
The following extract from the JORC Code 2012 Table 1 is provided for compliance with the requirements for the reporting of Ore Reserves:
‘JORC Code 2012 Table 1’[Section 1 Sampling Techniques and Data]
(Criteria in this section apply to all succeeding sections).
| Criteria | JORC Code Explanation | JORC Code Explanation | Commentary | Commentary |
|---|---|---|---|---|
| Sampling techniques | � | Nature and quality of sampling (e.g. cut channels, random chips, or specific | � | Sampling data includes Drill Core and RC Chip Samples. Diamond core drilling (DC) and |
| specialised industry standard measurement tools appropriate to the minerals under | reverse circulation (RC) drilling were used to obtain samples for geological logging, sampling | |||
| investigation, such as down hole gamma sondes, or handheld XRF instruments, etc.). | and assaying. Reverse circulation drilling (RC) is from Alara 2012 and from 2016 infill drilling. A | |||
| These examples should not be taken as limiting the broad meaning of sampling. | total of 58 drill core (DC), 17 RC (including 8 water monitoring holes) and 8 RC/DC or DC/RC | |||
| � � � |
Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. Aspects of the determination of mineralisation that are Material to the Public Report. In cases where ‘industry standard’ work has been done this would be relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1m samples from which 3kg was pulverised to produce a 30g 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 (e.g. submarine nodules) may warrant disclosure of detailed information. |
� | are drilled. RC chip samples were routinely collected in calico bags and chip box trays at 1m intervals. In areas expected to be waste, samples are at times combined into 2m intervals. Average sample length of DC and RC samples is 1m. Sample intervals honour geological boundaries. Both logging and sampling is done following industry standard to assure high quality of sampling. To ensure representative sampling, drill cores were marked considering lithology, mineralization intensity then sawn. RC drill holes are generally sampled systematically at 1m intervals and split using a cone splitter attached to the cyclone to generate a split of ~3 or more kg. RC Overweight samples (>3kg) were re-split with portable riffle splitter to about 1.6kg – 2.5kg to generate sample sent to lab for analyses. |
|
| � | Sampling is systematic and unbiased. Samples selected for sampling and subsequent sample | |||
| preparation and chemical analysis are based on geological logging with sample breaks after | ||||
| appropriate sampling interval (average length of sample is 1m) or at rock unit contact. | ||||
| Competent Person reviewed sample preparation and analytical methods used at laboratory. | ||||
| Details in the form of sample flowsheet have been generated. | ||||
| � | The DC and RC samples after QC samples inserts, packing and shipping to laboratory were | |||
| checked against sample submittal form, dried, crushed to min. 70% passing 2mm and a split of | ||||
| up to 1200g (250g in case of 2016 Infill drilling) was taken and pulverized to better than 85% | ||||
| passing a 75 micron. The resultant pulps were then analyzed. The pulverized samples were | ||||
| analyzed for Copper digested by four acid digestions followed by ICP-OES; for Gold using 50g | ||||
| Fire Assay followed by AAS. After pulverization, lab stored all the rejects for future use. | ||||
| Pulverization and Crushing at laboratory was controlled by Grind QC tests. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Drilling techniques � Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc.) and details (e.g. 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.). � The project has been drilled using diamond drill core (DC) drilling technique and reverse circulation (RC) technique to obtain the samples. A total of 58 drill holes has been drilled using DC, 17 drill holes has been drilled using RC (including 8 holes which are water monitoring holes); 8 drill holes are drilled as combination of RC and DC. Drilling diameter of drill holes drilled prior Alara is not known. From Alara drilling 59% were drilled by HQ diameter, 26% by NQ diameter and remaining 15% by PQ diameter. RC Drilling was conducted using a reverse circulation rig with 115mm to 133mm face-sampling bits. Diamond drilling in 2016 infill drilling program was conducted only in drill holes where RC drilling was difficult to proceed or due to mechanical problems or encountered ground water in the hole (Only two holes WH16RD013 from 92m up to end of hole and WH16RD015 from 74m up to end of hole) out of 6 were converted to diamond core drilling). None of the drill holesprovided oriented core. |
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| Drill sample recovery � Method of recording and assessing core and chip sample recoveries and results assessed. � Measures taken to maximise sample recovery and ensure representative nature of the samples. � Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. � High core recovery of plus 90% from all mineralized intervals was achieved from all drill core intervals. Recovery measurements are poor in broken rock and this was reflected in less weight of the samples. A quality drill rig and experienced team assured high core recovery achieved from all drill holes. Diamond drilling used drill muds and short runs in broken ground to maximize recovery � RC samples were weighed on a regular basis and no sample recovery issues were encountered during the drilling program. In few cases where core recovery was reported nil is duly recorded as gap. � RC samples were collected in plastic bags directly from the cyclone and laid directly on the ground in rows of 10. The sampling cyclone and sample buckets were cleaned between rod changes and after each hole to minimize down hole and/or cross contamination. RC Overweight samples (>3kg) were re-split with portable riffle splitter to about 1.6 – 2.5Kg. � Relationship between sample recovery and grade was not carried out as no issue of core loss has been encountered. |
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| Logging � Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. � Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc.) photography. � The total length and percentage of the relevant intersections logged. � RC and Core Drill holes were logged for geological and geotechnical logging following standard operating procedure designed and supervised by competent person. Output of logging provided all data required for reporting of exploration results, mineral resource estimation, and basis for mining and metallurgical studies. � Quantitative logging has been carried out where in length of interval logged and sample recovered is recorded. The minerals and % of minerals has been estimated. A qualitative description has been provided where ever required. Drill core photography has been done with a small board on which borehole number, core box number and drill core interval is marked. The entire drill holes length was logged. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Sub-sampling techniques and sample preparation � If core, whether cut or sawn and whether quarter, half or all core taken. � If non-core, whether riffled, tube sampled, rotary split, etc. and whether sampled wet or dry. � For all sample types, the nature, quality and appropriateness of the sample preparation technique. � Quality control procedures adopted for all sub-sampling stages to maximise representivity of samples. � Measures taken to ensure that the sampling is representative of the in situ material collected, including for instance results for field duplicate/second-half sampling. � Whether sample sizes are appropriate to the grain size of the material being sampled. � Drill core samples were split by saw or manually (manually in case of crushed material in tectonic zones or sandy material from first few initial meters of drilling). Drill core samples represents adequate half core samples except 25 samples were 1/4 core has been used. � RC drill holes are sampled dry at 1m intervals and split using a cone splitter attached to the cyclone to generate a split of ~3 or more kg in plastic bags. Overweight samples (>3kg) were re-split with portable riffle splitter to about 1.6kg – 2.5kg. These plastic bags were then put into uniquely numbered calico bags and packed in a steel trunk before dispatching to laboratory with clear submittal form. � The DC and RC samples after QC samples inserts, packing and shipping to laboratory were checked against sample submittal form, dried and crushed to 70% -2mm then rotary split off up to 1500g (250g during 2016 drilling program); the split was pulverized to better than 85% passing a 75 micron. Pulverizer bowls were carbon steel. Details for sample preparation are included in the Alara sample flowsheet. Sampling preparation is at high quality standards and consider appropriate. Premium rotary splitting procedure was used during 2016 infill drilling program in laboratory. � There was no inappropriateness observed with respect to RC/ Drill Core sample Preparation. Sample preparation technique is considered as appropriate for Mineral Resource Estimation. � Quality control was adopted for all sub-sampling stages. During initial sub-sampling while drill core splitting, adequacy of splitting was checked by project geologist to ensure that splitting is not biased. For RC samples field duplicates has been obtained and inserted into sample stream. Pulverization and Crushing at laboratory was controlled by Grind QC tests. Field blanks were inserted into the sample stream to check for contamination. � Check samples from pre Alara drilling (e.g. Pilatus drilling) in form of 1/4 drill core then Field Duplicates has been implemented. Quality control adopted along with continuous supervision on drilling by Alara responsible geologist as well as supervision on drill core splitting are considered to be sufficient measures to ensure representativeness of the sampling. The results of field duplicates inserted into sample stream are satisfactory. � Industry standard sample preparation by accredited labs has been used. Sample sizes are appropriate for the commodity and higher amount of pulverized material (split of 1.2kg after crushing)to reduce apossible “nugget effect”. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Quality of assay data and laboratory tests � The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. � For geophysical tools, spectrometers, handheld XRF instruments, etc., the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. � Nature of quality control procedures adopted (e.g. standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established. � The pulverized samples were analyzed for Copper digested by four acid digestions followed by ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometry); for Gold using 50g Fire Assay followed by AAS (Atomic absorption spectroscopy). Other 32 elements including Zn, Ag were analyzed by four acid digestions followed by ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometry). The technique used is considered total. Assaying and laboratory procedures are considered appropriate for the commodity. � Terraplus instrument has been used to take magnetic susceptibility readings from drill core; and handheld XRF was used to determine material element concentrations for exploration guidance and aid. The data is not used in Mineral Resource Estimate. � Competent Person reviewed laboratory QA/QC (lab internal QA/QC) procedure and results and external QA/QC (Quality control samples inserted by Alara) procedures and results. Alara quality control procedure is well documented. External QA/QC includes certified reference materials (standards), Field blanks, Field duplicates, Check Samples and Check Assays. Acceptable levels of accuracy and precision have been established. Grind tests has also been done. |
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| Verification of sampling and assaying � The verification of significant intersections by either independent or alternative company personnel. � The use of twinned holes. � Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. � Discuss any adjustment to assay data. � Calculation of drill hole intersections used as a part of the exploratory data assessment was verified by re-calculation of selected intersections by second personnel of independent company. Selected analyses are confirmed in form of check assays by check assay laboratory which is independent in fact in competition with primary assay laboratory. All analytical values of each individual sample were verified against signed laboratory PDF certificate. � Nearest hole analysis as part of data verification of previous drilling has been carried out. � All compiled data was checked for errors and missing data. Missing data was requested from site geologist and was used for database update by competent person. Dataset was checked for logical errors, i.e. transposition of intervals, mislabelling of data, missing data, etc. Several dozen essentially trivial transposition errors were found as well as minor discrepancies between maximum hole length and the maximum depth of the last sample in that hole. Lithological codes were created from available Lithology information. Minor lithological coding errors were also found; all errors were corrected. To save time on data compilation and database updates CP decided to create a Data Entry template to enter all data from drilling in a proper database format. This has helped immensely in database update; 3D holes file update and QAQC assessment. Electronic data are backed up at secure FTP location and physical data including primary are stored at project site and Alara office in Muscat. � Remaining drill core (second half core) is available for all of the Alara drill hole intervals and can be used for future studies and/or confirmatory testing. RC Chips are stored in calico bags in dry storage and available for all drill hole intervals for future studies and/or confirmatory testing. � Assaydata were not adjusted. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Location of data points � Accuracy and quality of surveys used to locate drillholes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. � Specification of the grid system used. � Quality and adequacy of topographic control. � Drill holes Collar data were surveyed using DGPS. Multi shot Downhole Survey has been done on selected holes, no significant downhole survey deviation has been observed in these holes. � Coordinate system UTM, Zone = 40 North, Datum Transformation = WGS 84 has been used. � Drilling area is covered by topographic survey with high accuracy. The ground levels at an average of 10m interval has been taken and the contour drawing at 0.20m interval has been prepared after controlpoints atproject site has been established. |
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| Data spacing and distribution � Data spacing for reporting of Exploration Results. � Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. � Whether sample compositing has been applied. � This announcement relates to Mineral Resource Estimate and not on exploration results. The MRE is based on sufficient drilling information. (Drill hole collar location indicating appropriate drill spacing is presented under Figure1 of Alara’s ASX Announcement dated 19 September 2016) � Data spacing and distribution is sufficient for resource category presented. Drill spacing is adequate to define the geological and grade continuity for Mineral Resource. Classification has taken into account data/estimation quality and drill spacing. � Sample compositing was applied only during resource estimation process. Sampling compositing was not applied during sampling or on sampling data before calculating drill hole intersections. |
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| Orientation of data in relation to geological structure � Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. � If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material. � After data visualization in 3D, competent person concluded that drilling orientation doesn't introduce sampling bias. Drill orientation varies by drilling campaigns and company. 43 drill holes are drilled in azimuth 45 to 52 degrees; 40 drill holes are with azimuth 0 degrees (including 39 drill holes drilled as vertical). � Orientation of drillingand drill location has not been found to have impact on samplingbias. |
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| Sample security � The measures taken to ensure sample security. � Security of samples was maintained very well from dispatch of samples up to data storage. Samples in the form of half core, RC chips, coarse rejects are stored at project site; some rejects are stored in in laboratory and will be transported back to project site. Transport to the laboratory was done using professional couriers and secured, meeting all necessary requirements for chain of custody. Trackingsheets was implemented to track sampleprogress. |
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| Audits or reviews � The results of any audits or reviews of sampling techniques and data. � Data were reviewed in detail. During the site visit in 2012, 2013 and 2016 Mr. R. Sharma (Competent Person) confirmed the pillar of Alara and pre Alara drill holes. Mr. Sharma (Competent Person) in 2012 instructed to survey all holes using DGPS. Collar data was checked using DTM and compared with historical records. The site visit by included a review of logging spot checks, sampling and logging procedures as well as geology. Mr. Sharma visited the Al Hadeetha project site on several occasions between June 2012, May 2013 and in May 2016. |
APPENDIX 1 - JORC Code 2012 Table 1
‘JORC Code 2012 Table 1’ 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 tenement | � | Type, reference name/number, location and ownership including agreements or | � |
Washihi Exploration license of Al Hadeetha Copper - Gold project is held by Al Hadeetha |
| and land tenure | material issues with third parties such as joint ventures, partnerships, overriding | Resources LLC. Al Hadeetha Resources LLC is a limited liability company incorporated in the | ||
| status | royalties, native title interests, historical sites, wilderness or national park and | Sultanate of Oman. Shareholders in the company are Alara Oman Operations Pty Ltd (70%) a | ||
| environmental settings. | wholly owned subsidiary of Alara Resources Ltd and Al Hadeetha Investments LLC (related to the | |||
| � | The security of the tenure held at the time of reporting along with any known | Al Naba Group of Companies). Alara Resources Limited (ASX: AUQ) is an Australian based | ||
| impediments to obtaining a licence to operate in the area. | minerals exploration and mining company with a portfolio of projects in Saudi Arabia and Oman. | |||
| � | Exploration license with total area 39 km2 covering Washihi Copper - Gold mineralization was | |||
| granted on January 2008 and has been renewed annually since then, with the most renewal in | ||||
| March 2016. | ||||
| � | An application for Mining License (ML) over an area 0f 3.1 sq.km within Exploration License was | |||
| submitted in April 2012. As part of ML approval process the ML application has since been | ||||
| processed and inspected by several Government Regulatory authorities including Ministries of | ||||
| Tourism, Housing, Archaeology, Defence, Water Resources, Environment, Local Municipality etc. | ||||
| The Al Hadeetha Copper Project executive report has been submitted to the Public Authority for | ||||
| Mining and the Company is not aware of any reason why the license could not be issued in order | ||||
| to meet the proposed production schedule commencing in 2018. | ||||
| � | If there is mineral production within the license area all applicable royalties will be payable to | |||
| Government. | ||||
| � | Appropriate consents have been obtained from local communities around the license area in | |||
| support of grant of ML. | ||||
| � | Exploration license of Washihi Copper - Gold project is held by Al Hadeetha Resources LLC. Al | |||
| Hadeetha Resources LLC is a limited liability company incorporated in the Sultanate of Oman. | ||||
| Shareholders in the company are Alara Oman Operations Pty Ltd (70%) a wholly owned | ||||
| subsidiary of Alara Resources Ltd and Al Hadeetha Investments LLC (related to the Al Naba | ||||
| Group ofCompanies). |
- Exploration license of Washihi Copper - Gold project is held by Al Hadeetha Resources LLC. Al Hadeetha Resources LLC is a limited liability company incorporated in the Sultanate of Oman. Shareholders in the company are Alara Oman Operations Pty Ltd (70%) a wholly owned subsidiary of Alara Resources Ltd and Al Hadeetha Investments LLC (related to the Al Naba Group of Companies).
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Exploration done by other parties � Acknowledgment and appraisal of exploration by other parties. � The Washihi prospect was discovered during the course of regional reconnaissance by Prospection Ltd. during 1976-1977. They carried out 1:2000 scale geological mapping, geophysical, geochemical surveys and drilled ten diamond drill holes. The geophysical surveys included Pulse electro-magnetic and ground magnetics. Soil samples were taken. � Exploration work by Ministry of Petroleum and Minerals: Geologists from the Ministry of Petroleum and Minerals reviewed the work undertaken by Prospection Ltd. in their report. The report concluded that the Prospection Limited drilling intersected a moderate amount of copper mineralization. � BRGM undertook regional scale mapping (1:100,000) as well as a review and work program over a number of prospects including the Washihi prospect. More detailed investigations on Washihi were limited to the compilation and reinterpretation of previous work on the prospect including examination re-logging and limited re-sampling of drill holes from the Prospection Ltd. work. � World Geosciences Corporation (WGC) undertook an airborne geophysical survey and interpretation over the area during 1995/1996. The WGC survey collected magnetic and gamma ray (radiometric) data and digital elevation data. � Exploration work by National Mining Company (NMC) reviewed the Prospection Ltd. drill logs. They did an initial geological survey on 1: 10,000 scale for about 10km2area. In addition, limited surface outcrops were sampled away from the gossan. They made a data set of ground geophysical survey on Washihi prospect by WGC in 1997, a basis for further exploration. Their drill targets were based on the geological mapping and geophysical data. NMC drilled 15 holes in two drilling programs following the WGC recommendation of targets. � Exploration work by Pilatus Resources Oman (PRO). After receiving the Exploration License and evaluation of all the previous data and records PRO decided to conduct the exploration on the following three lines: Structural survey, Geochemical survey and Drilling |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Geology � Deposit type, geological setting and style of mineralisation. � The area is largely underlain by the Samail Ophiolite, with the Hawasina nappes appearing at the front of the Samail Nappe in Jabal al Hammah as well as in windows in Wadi Andam and Wadi Musfa. � The area around the Washihi Prospect is structurally complex and a large part of it is covered by wadi gravels. The area contains limited outcrops of several different geological units. The Washihi gossan outcrops in the centre of the area surrounded by ophiolitic basalts and associated sediments. At the northeast of the gossan and southwest of Wadi Andam, the geology of Washihi prospect is in form of a mixture of sedimentary and igneous features. As the area is mostly devoid of any outcrops and most of the rock outcrops are covered under alluvial sediments, the interpreted geological map was developed based on the interpretation of alterations zones observed after ground geophysical surveys. � In general Washihi copper mineralization (and gold) is typical in style of Volcanic Hosted Massive Sulphide with majority of copper occurring as stock work of sulphide mineral veins injected in to light grey basalt along with silicate veins forming highly brecciated host basalt. The recent drilling also has identified presence of Massive Sulfide lens overlying these stockworks indicating formation of black smokers on ocean floors. � The copper ores are dominantly CHALCOPYRITE, which occurs as discrete grains between 50 µm and 100µm. There is a small proportion that is composite with pyrite. A small proportion of the copper is present as BORNITE, either discrete or with chalcopyrite. The contained GANGUE consists of discrete PYRITE which is about equivalent to the composite pyrite with chalcopyrite and of similar overall dimensions usually between 20µm and 50µm. � Although the mineralization as intersected in cores appears uniform and coherent throughout the orebody but detailed logging identified following types of stock works � Banded jasper-chert-sulphide associated with gossan cap in form of hill above surface � Pyrite-rich margins � Pyrite-quartz breccia � Massive pyrite/ semi massive chalcopyrite � Quartz-pyrite stockwork � Chalcopyrite-pyrite stockwork � Wall rock alterations: Chloritic – sericite alteration noticed throughout the mineralization with occasional jasper fillings especially associated with high chalcopyrite veining. Over printing of Iron oxides observed associated with ground water zones. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | JORC Code Explanation | Commentary | Commentary |
|---|---|---|---|---|
| Drillhole Information | � |
A summary of all information material to the understanding of the exploration | � | The collar locations, survey data, drill hole length, logging data and other data related to drilling |
| results including a tabulation of the following information for all Material drillholes: | were reviewed by competent person before Resource Estimate. Drill hole intersections of Cu and | |||
| � easting and northing of the drillhole collar � elevation or RL (Reduced Level – elevation above sea level in metres) of the |
� | Au were generated before resource estimation as part of exploratory data assessment. Competent Person reviewed all data related to drill holes information is excluded. |
||
| drillhole collar | ||||
| � dip and azimuth of the hole | ||||
| � downhole length and interception depth | ||||
| � 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 clearlyexplain whythis is the case. | ||||
| Data aggregation | � | In reporting Exploration Results, weighting averaging techniques, maximum | � | Drill hole intersections were generated before resource estimation as part of exploratory data |
| methods | and/or minimum grade truncations (e.g. cutting of high grades) and cut-off grades | assessment and are not part of this ASX/media release. Drill hole intersections of Copper and | ||
| are usually Material and should be stated. | corresponded Gold mineralization were generated as length weighted average, no top cut has | |||
| � | Where aggregate intercepts incorporate short lengths of high grade results and | been applied, Cut-off grade applied is 0.2 Cu% is potential economic cut off to delineate potential | ||
| longer lengths of low grade results, the procedure used for such aggregation | mineralization. The cut off also represent natural break/ sharp change in assays Cut-off grade | |||
| should be stated and some typical examples of such aggregations should be | 0.2% Cu used in exploration results reporting represents a likely optimum cut-off grade for | |||
| shown in detail. | delineating potential mineralization. | |||
| � | The assumptions used for any reporting of metal equivalent values should be | � | In exploration results reporting, the Drill hole intersections of Copper and corresponded Gold | |
| clearly stated. | mineralization were generated as length weighted average, no top cut has been applied, Cut-off | |||
| grade applied is 0.2Cu % or natural break. | ||||
| � | In exploration results reporting Cu and Au grade for particular drill hole intersection was | |||
| calculated as length weighted average to give same weight to all samples of particular drill hole | ||||
| intersections. | ||||
| � | No assumptions of metalequivalent have beenused. | |||
| Relationship | � | These relationships are particularly important in the reporting of Exploration | � | Drill hole intersections results are reported as down hole lengths. True thickness has been taken |
| between | Results. | in account while 3D interpretation for Mineral Resource Estimate. | ||
| mineralisation | � | If the geometry of the mineralisation with respect to the drillhole angle is known, | � | The mineralization is daylighting in north east and dipping in south west. Drill hole intersections |
| widths and intercept | its nature should be reported. | are tabulated as down hole lengths for all holes with no respect to DIP of the hole. | ||
| lengths | � | If it is not known and only the downhole lengths are reported, there should be a | � | Drill hole intersection are reported only as down hole lengths. True width has not been calculated |
| clear statement to this effect (e.g.‘downhole length, true width not known’). | and reported. | |||
| Diagrams | � | Appropriate maps and sections (with scales) and tabulations of intercepts should | � | A plan view of the drill holes and cross-sectional interpretations can be found in the report |
| be included for any significant discovery being reported. These should include, | ‘Competent Person Report – Washihi Mineral Resource Estimate – 2016 Update’, dated | |||
| but not be limited to, a plan view of drillhole collar locations and appropriate | 18 September 2016, issued by Bedrock Mineral Resource Consulting. | |||
| sectional views. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Balanced reporting � Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high grades and/or widths should be practicedto avoidmisleadingreporting of Exploration Results. � Drill hole intersections as an outcome of exploration were generated and evaluated from all drill holes. This includes both high grade and low grade intersections. |
||
| Other substantive exploration data � Other exploration data, if meaningful and material, should be reported including (but not limited to): geological observations; geophysical survey results; geochemical survey results; bulk samples – size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances. � Geology of the project area, results of geophysical survey, geochemical survey, geological observations, specific gravity testing, summary of multi element analyses of samples were studied and evaluated by Competent Person before resource estimation. |
||
| Further work � The nature and scale of planned further work (e.g. tests for lateral extensions or depth extensions or large-scale step-out drilling). � Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commercially sensitive. � While the immediate focus of work will remain on development of mining of current resources at Washihi, the further exploration work will involve evaluation of exploration targets within the license area. There are 5 exploration targets identified in the area. � WH01. -Smooth elongated RTP mag low along a NW-SW lineament; suggesting mag source is at depth. Anomaly shape suggests a SW dip as encountered in drill core. Washihi JORC mineralization reported. � WH02-. This target incorporates three features, namely 1) RTP mag low along same trend as WH01 where anomaly wavelength suggests a shallower source to WH001. 2) In the same zone exists presence of RTP mag high and 3) Broad complex RTP mag lows which possibly a part of the same mineralization system as the known Washihi mineralization to the SE and possible feeder zone to the entire Washihi mineralized system. � WH03 - Elongate RTP mag low, parallel to the strike of the known Washihi mineralization. Similar character. Possible repetition of Washihi lithology / mineralization. � WH04- Elongate RTP mag low, along strike from WH03. Similar character. � WH05 - All remaining unexplored parts of Washihi tenement. � Planned exploration would include geophysical surveys (TEM and IP, Gravity) to position drill collars, RC drillingfor target testingfollowed bydefinitive core drillingfor successful targets. |
APPENDIX 1 - JORC Code 2012 Table 1
‘JORC Code 2012 Table 1’ 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 integrity | � | Measures taken to ensure that data has not been corrupted by, for example, | � |
The database used in this Mineral Resource Estimate (MRE) comprises of 83 drill holes drilled by |
| transcription or keying errors, between its initial collection and its use for Mineral | Prospection, NMC, Pilatus and Alara. Detailed data verification and QA/QC procedures were | |||
| Resource estimation purposes. | followed before using this data for the MRE. 75 drill holes are resource drill holes; remaining 8 drill | |||
| � | Data validation procedures used. | holes are water-monitoring boreholes. | ||
| � | Alara has carried out nearest hole analysis as part of data verification of previous drilling. | |||
| � | The MS Excel spread sheet, detailing the source of information and verification process adopted in | |||
| all data tables (collar, survey, geology, assay, recovery, specific gravity, magnetic susceptibility) | ||||
| for each hole has been documented. | ||||
| � | As an additional assay verification step, historical assay data (e.g. Prospection) was checked | |||
| using cross sections with assay histogram published in original historical report. Selected historical | ||||
| Assays (e.g. Pilatus) have been verified through check samples. | ||||
| � | All Drill holes drilled by Alara have been surveyed by GMAP LLC, Oman using DGPS. Alara has | |||
| surveyed using same technique and same company, the drill holes drilled by Pilatus drill holes | ||||
| drilled by NMC. These re-survey data has been compared with original Pilatus and NMC | ||||
| information and no significant difference has been noted. This gives confidence on historical collar | ||||
| data. | ||||
| � | Alara has done downhole survey for 11 non-vertical holes. Deviation, change in dip and azimuth | |||
| has not been significant. Down hole survey data was checked for kinks. Verification was done | ||||
| visually and statistically in the form of DIP change per meter and BRG (azimuth) change per meter | ||||
| histogram. | ||||
| � | To avoid any data compilation errors of analytical data, and as independent data verification | |||
| checks, approximately 80 % of the laboratory-supplied CSV format assay certificates used in | ||||
| assaydata compilation were verified against PDF certificatesprovided bythe lab. | ||||
| Site visits | � | Comment on any site visits undertaken by the Competent Person and the | � |
Mr. Ravi Sharma during site visit reviewed geology, mineralization controls, density determination, |
| outcome of those visits. | drilling, logging, and sampling. | |||
| � | If no site visits have been undertaken indicate why this is the case. | � | Beside that he confirmed pillar of some drill holes from previous drilling campaigns and requested | |
| Alara for DGPS survey of all holes. | ||||
| � | Mr. Sharma visited the Al Hadeetha project site on several occasions between June 2012, May | |||
| 2013 and in May 2016. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Geological interpretation � Confidence in (or conversely, the uncertainty of) the geological interpretation of the mineral deposit. � Nature of the data used and of any assumptions made. � The effect, if any, of alternative interpretations on Mineral Resource estimation. � The use of geology in guiding and controlling Mineral Resource estimation. � The factors affecting continuity both of grade and geology. � Geological interpretation of Al Hadeetha project is based on drill hole interpretation and logging data. Interpretation has been done by competent person and discussed with qualified geologist working for the project since 2012. All data used are available for review in digital or analogue format and there is good confidence in the current interpretation. The geological and mineralization continuity has been demonstrated to 100% by results of 2016 infill drilling program. � The two dimensional sectional interpretation was carried out using the drill holes. This was carried out section-by-section incorporating geological, structural and assay information from drill holes. Sections were created at approximate distance of 40m based on number of holes passing through or near the section. These sections were used to define a mineralized shell at a cut-off of approx. 0.2% Cu or natural break in assays. The digitized section polygons were used to create mineralized shell wireframe. � The geological and structural control on mineralization is clearly understood based on current drilling data. The best modelling method to interpret geological and mineralized grade shell were used. No other methods like probability model were attempted as was not required due to clear understanding of geology. Logging data (litho codes, alteration, structural and other) along with grade histogram has been used while sectional interpretation. Structural data, Logging data and drill core photographs helped to identify and model structure in the north-west part of the Washihi mineralization. The mineralization shape on either side of this structure indicates this structure to be pre-mineralized. The fracture data in logging information suggests the flow direction of mineralized fluid. � Continuity ofcopper mineralization iswellunderstoodin the area of resource estimation. |
||
| Dimensions � The extent and variability of the Mineral Resource expressed as length (along strike or otherwise), plan width, and depth below surface to the upper and lower limits of the Mineral Resource. � Resource is approximately 800m in strike and approx. 160m in width (central part). Mineralization starts near surface and goes up to approx. 250m below the surface. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | JORC Code Explanation | Commentary | Commentary |
|---|---|---|---|---|
| Estimation and | � | The nature and appropriateness of the estimation technique(s) applied and key | � |
The two dimensional sectional interpretation was carried out using the drill holes. Sections were |
| modelling | assumptions, including treatment of extreme grade values, domaining, | created at approximate distance of 40m based on number of holes passing through or near the | ||
| techniques | interpolation parameters and maximum distance of extrapolation from data | section. These sections were used to define a mineralized shell at a cut-off of 0.2% Cu or natural | ||
| points. If a computer assisted estimation method was chosen include a | break in assays. The digitized section polygons were used to create mineralized shell wireframe | |||
| description of computer software and parameters used. | (Copper - Gold Wireframe). | |||
| � | The availability of check estimates, previous estimates and/or mine production | � |
4.9% Cu was used to cap copper assays and 1 g/t Au was used to cap gold assays. Capping was | |
| records and whether the Mineral Resource estimate takes appropriate account of | done based on probability plot on assay samples within mineralized envelope. Length weighted | |||
| such data. | composites of 1 meter were created using Datamine software. Composites were created within | |||
| � | The assumptions made regarding recovery of by-products. | mineralized wireframe. Compositing was done on capped samples. | ||
| � | Estimation of deleterious elements or other non-grade variables of economic | � |
Datamine Studio© was used for resource modelling and estimation and Snowden Supervisor© | |
| significance (e.g. sulphur for acid mine drainage characterisation). | software for KNA and geostatistics. Snowden Supervisor software© was also used to create | |||
| � | In the case of block model interpolation, the block size in relation to the average | directional pair-wise relative variograms on copper and gold composites. Only composites within | ||
| sample spacing and the search employed. | mineralized wireframe were used for variogram analysis. A nested spherical variogram was | |||
| � | Any assumptions behind modelling of selective mining units. | modelled for composited Copper and Gold. | ||
| � | Any assumptions about correlation between variables. | � | Block model grades for Copper and Gold were estimated by Ordinary Kriging. Kriging | |
| � | Description of how the geological interpretation was used to control the resource | neighbourhood analysis was carried out to optimize parameters for good confidence estimate. | ||
| estimates. | Besides Ordinary Kriging, ID2was also tested. | |||
| � | Discussion of basis for using or not using grade cutting or capping. | � | The previous estimates from 2013 includes: 6.84Mt Indicated at 0.90% Cu and 0.17g/t Au and | |
| � | The process of validation, the checking process used, the comparison of model | 7.27Mt Inferred at 0.71% Cu and 0.20g/t Au at 0.25% Cu cut-off grade. | ||
| data to drillhole data, and use of reconciliation data if available. | � | Prior 2013 Mineral Resource 2.1Mt Indicated at 0.70% Cu and 0.17g/t Au and 6.9Mt Inferred at | ||
| 0.76% Cu and 0.16g/t Au was announced in 2012 at 0.00% Cu cut-off grade. | ||||
| � | No mining is done on the Washihi deposit. | |||
| � | No assumptions have been made regarding recovery of Gold, in mineral resource estimate. | |||
| � | Only Cu and Au are estimated. No estimation of deleterious elements or other elements has been | |||
| done. | ||||
| � | Parent block size of 10 m in X direction, 10 m in Y direction and 5m in Z direction was created | |||
| based on Kriging neighbourhood analysis ‘KNA’ in Snowdens Supervisor software. The KNA | ||||
| exercise analyzed various block sizes with various search neighbourhood and variograms. | ||||
| Block of 10m X 10m X 5m gave best results of regression slope and Kriging efficiency. | ||||
| � | To preserve local grade variation, a search neighbourhood strategy with three search ellipse was | |||
| used. For first search, a minimum of 2 composites were required, with a maximum of 24. For | ||||
| second search, a minimum of 2 and maximum 32 and for third search minimum 2 composites and | ||||
| maximum 40. Condition of maximum three from one drill hole was maintained in all searches to | ||||
| avoid samples coming from one or two holes only to estimate blocks. This ensures minimum three | ||||
| holes to estimate a block. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Estimation and modelling techniques (Continued) � No assumption behind modelling of selective mining units has been introduced. � During sectional interpretation it was well noted that Gold is included in Copper intersections except few cases where it is not. Statistical evaluation of composite samples within wireframe has not shown correlation between Copper and Gold. � Only blocks within interpreted Copper wireframe are reported. Interpretation of Copper Gold wireframe is based on geological and assay information. � 4.9% Cu was used to cap copper assays and 1g/t Au was used to cap gold assays. Capping was done based on probability plot on assay samples within mineralized envelope. � Block model has been validated through visual checks in section and plan view between block model and composites, the statistical validation checks were carried out to validate model. Swath plot has been generated and evaluated for different slice sizes and for all directions (X, Y, Z) |
||
| Moisture � Whether the tonnages are estimated on a dry basis or with natural moisture, and the method of determination of the moisture content. � Tonnage is estimated on a dry basis. |
||
| Cut-off parameters � The basis of the adopted cut-off grade(s) or quality parameters applied. � Washihi mineral resource is reported at 0.25% Cu cut off and Gossan Inferred resource at 0.25g/t Au. The cut-off grade for reporting resource is based on reasonable level of operating cost parameters, assuming 1:4.5 strip ratio, 95% Cu recovery, and 30% Au recovery, $2.80/lb long term copper price and $1,300/oz gold price.. The operating cost assumptions and recovery data was provided by Alara (mining cost $1.50/t, processing $6.93/t milled, grade control and mine supervision $1.79/t milled, total to $16.97/t milled, which approximately corresponds to extraction ofcostofonetome oforewith0.25% Cu and 0.25g/t Au. |
||
| Mining factors or assumptions � Assumptions made regarding possible mining methods, minimum mining dimensions and internal (or, if applicable, external) mining dilution. It is always necessary as part of the process of determining reasonable prospects 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. � Open pit mining method is considered based on the near surface mineralization. The internal waste/ dilutions for intersections considering these will not be mined separately. Block height of 5m is considered assuming 10m mining bench. Mining factors such as SMU size or strip ratio has not been assumed. This will be taken up at Mineral Reserve calculation. |
||
| Metallurgical factors or assumptions � The basis for assumptions or predictions regarding metallurgical amenability. It is always necessary as part of the process of determining reasonable prospects for eventual economic extraction to consider potential metallurgical methods, but the assumptions regarding metallurgical treatment processes 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 assumptionsmade. � No metallurgical factors assumptions have been used in mineral resource estimate. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | Commentary |
|---|---|---|
| Environmental factors or assumptions � Assumptions made regarding possible waste and process residue disposal options. It is always necessary as part of the process of determining reasonable prospects for eventual economic extraction to consider the potential environmental impacts of the mining and processing operation. While at this stage the determination of potential environmental impacts, 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. � No environmental factors assumptions have been used in mineral resource estimate. |
||
| Bulk density � Whether assumed or determined. If assumed, the basis for the assumptions. If determined, the method used, whether wet or dry, the frequency of the measurements, the nature, size and representativeness of the samples. � 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. � Bulk density determinations are made on selected diamond drill samples using Exova lab, Muscat, Sultanate of Oman following International Society for Rock Mechanics (ISRM) procedure. Samples were selected to cover lateral extent, vertical extent, different rock type, alteration, and grade. Tonnages are estimated on a dry basis. � Constant density factor was assigned to the block model. A factor was not applied to account for void spaces or moisture. � Density data are considered appropriateforusein Mineral Resource estimate. |
||
| Classification � The basis for the classification of the Mineral Resources into varying confidence categories. � Whether appropriate account has been taken of all relevant factors (i.e. relative confidence in tonnage/grade estimations, reliability of input data, confidence in continuity of geology and metal values, quality, quantity and distribution of the data). � Whether the result appropriately reflects the Competent Person’s view of the deposit. � Mineral Resource classification is based on geological and mineralization continuity, estimation quality and validation. The scorecard system was where a 50% weight was assigned to estimation methodology, validation and quality of estimate and 50% on geological and mineralization continuity. � The estimation quality includes 5 parameters - kriging variance, regression slope, kriging efficiency, no of holes used to estimate a block and number of composites used to estimate a block. The block model values for these 5 parameters were converted to 10 being maximum score for each parameters to arrive at discrete score for each block. The areas of geological continuity and mineralization continuity was reviewed in plan and section, areas of interpolation and extrapolation were identified. Based on this the areas were assigned as very high geological confidence (50 marks), reasonable to high geological confidence (40 marks) and lower geological confidence (30 marks). The sum of all the scores were arrived to get a score of the block out of 100. A block with more than 90 score was considered for measured (no blocks are above 90 in the current resource), a block with 70 to 90 score is classified as indicated and blocks with less than 70 score are classified as Inferred. � The block model was reviewed in plan and sectional view. The blocks above 70 score were used to create Indicated resource boundary. � This was used to avoid spotty appearance. Classified block model was reviewed in section in relation to drill density before finalizing the classification. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC Code Explanation | JORC Code Explanation | Commentary | Commentary |
|---|---|---|---|---|
| Classification | (Continued) | � | This approach is considered appropriate taking care of all relevant factors. The recent infill drilling | |
| program has confirmed grade and tonnes of already defined MRE of 2013 giving confidence on | ||||
| understanding ofgeologic andmineralizationcontinuity. | ||||
| Audits or reviews | � | The results of any audits or reviews of Mineral Resource estimates. | � | The geological interpretation was reviewed by an Alara geologist. No independent review has |
| beencarried outon resourcemodel. Internalpeer review was carried out. | ||||
| Discussion of | � | Where appropriate a statement of the relative accuracy and confidence level in | � |
No statistical comparison of relative accuracy has been attempted with regards to mine production |
| relative accuracy/ | the Mineral Resource estimate using an approach or procedure deemed | accuracy as no production data is available. Washihi has not commenced production at this stage. | ||
| confidence | appropriate by the Competent Person. For example, the application of statistical | Block model has been validated in detail (e.g. Swath plot for X, Y, Z and at different slice sizes). | ||
| or geostatistical procedures to quantify the relative accuracy of the resource | � |
Block model validation explains the estimates are reasonably accurate with global and local | ||
| within stated confidence limits, or, if such an approach is not deemed | variability. | |||
| appropriate, a qualitative discussion of the factors that could affect the relative | ||||
| accuracy and confidence of the estimate. | ||||
| � | The statement should specify whether it relates to global or local estimates, and, | |||
| if local, state the relevant tonnages, which should be relevant to technical and | ||||
| economic evaluation. Documentation should include assumptions made and the | ||||
| procedures used. | ||||
| � | These statements of relative accuracy and confidence of the estimate should be | |||
| comparedwithproductiondata,where available. |
APPENDIX 1 - JORC Code 2012 Table 1
‘JORC Code 2012 Table 1’ Section 4 Estimation and Reporting of Ore Reserves
(Criteria listed in section 1, and where relevant in sections 2 and 3, also apply to this section).
| Criteria | JORC | Code Explanation | Commentary | Commentary |
|---|---|---|---|---|
| Mineral Resource | � | Description of the Mineral Resource estimate used as a basis for the | � |
Refer to Section 3. The Ore Reserve estimate is based on the Mineral Resource determined as of |
| estimate for | conversion to an Ore Reserve. | 19 September 2016. | ||
| conversion to Ore | � | Clear statement as to whether the Mineral Resources are reported additional | � |
The Mineral Resources are inclusive of the Ore Reserves. |
| Reserves | to, or inclusive of, the Ore Reserves. | |||
| Site visits | � | Comment on any site visits undertaken by the Competent Person and the | � |
The Competent Person for the Ore Reserves, Mr Harry Warries, has not visited the site. |
| � | outcome of those visits. If no site visits have been undertaken indicate why this is the case. |
� | No site visit was deemed necessary as the site is a ‘greenfields’ site with no existing mine workings and or site specific mine infrastructure being present. |
|
| Study status | � | The type and level of study undertaken to enable Mineral Resources to be | � |
A feasibility study (FS) was completed by Alara Resources Limited in November 2016. The FS |
| converted to Ore Reserves. | was undertaken by a team of industry professionals as listed below. | |||
| � | The Code requires that a study to at least Pre-Feasibility Study level has been undertaken to convert Mineral Resources to Ore Reserves. Such studies will have been carried out and will have determined a mine plan that is technically achievable and economically viable, and that material Modifying Factors have been considered. |
� Resource Estimate Bedrock Mineral Resource Consulting � Mine Engineering Mining Focus Consultants Pty ltd � Metallurgy and Processing Megabest Pty Ltd, Aarya Engineering LLC � Water delivery system design Aarya Engineering LLC and cost estimation |
||
| � General site infrastructure Al Naba Group (Oman) |
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| � Tailings storage facility GRC Resources LLC |
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| � Slurrying and Pipeline Paterson and Cooke |
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| � Legal tenure Alara |
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| � Social and Environmental Al Majal LLC (Oman), Alara |
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| � Market Research World Bank, Economist Intelligence Unit |
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| � Financial Modelling Varuna Group,Alara |
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| Cut-offparameters | � | The basis of the cut-off grade(s) or quality parameters applied. | � | A cutoff of 0.3% Cu was adopted based on the economicparameters determined for the Project. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC | Code Explanation | Commentary | Commentary |
|---|---|---|---|---|
| Mining factors or | � | The method and assumptions used as reported in the Pre-Feasibility or | � |
It is proposed to mine the resource utilising conventional open pit mining methods. |
| assumptions | � � � � � � |
Feasibility Study to convert the Mineral Resource to an Ore Reserve (i.e. either by application of appropriate factors by optimisation or by preliminary or detailed design). The choice, nature and appropriateness of the selected mining method(s) and other mining parameters including associated design issues such as pre-strip, access, etc. The assumptions made regarding geotechnical parameters (eg pit slopes, stope sizes, etc), grade control and pre-production drilling. The major assumptions made and Mineral Resource model used for pit and stope optimisation (if appropriate). The mining dilution factors used. The mining recovery factors used. Any minimum mining widths used. |
� � � � |
Conversion of Mineral Resources to Ore Reserves has been by the application of appropriate mining factors and assumptions based on the feasibility study, including geotechnical investigations. A 5% mining dilution and a 95% mining recovery was estimated. The mine plan was primarily based on Indicated Resources with 3.5% of Inferred Resources included. The Inferred Resources are mined during the process of accessing the Indicated Resources. This Inferred Resource is not considered material to the value of the Project and is not included as part of the Probable Ore Reserve. The mine plan incorporates a nine month mining ramp-up, with steady state production of 1Mtpa reached in Year 2. The maximum total material movement is less than 8Mtpa. The primary infrastructure required for the development of the Project are listed below: oGeneral administration and services infrastructure. |
| � | The manner in which Inferred Mineral Resources are utilised in mining studies | oGeneral mining facilities. |
||
| and the sensitivity of the outcome to their inclusion. | oAccommodation village |
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| � | The infrastructure requirements of the selected mining methods. | oElectricity taken from the national grid with substations on site. |
||
oProcess plant |
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oA 70km waterpipelinepumpingwater from the Nizwa sewage treatmentplant. |
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| Metallurgical factors | � | The metallurgical process proposed and the appropriateness of that process to | � |
The proposed metallurgical process incorporates well-tested technology and comprises |
| or assumptions | � � � � � |
the style of mineralisation. Whether the metallurgical process is well-tested technology or novel in nature. The nature, amount and representativeness of metallurgical test work undertaken, the nature of the metallurgical domaining applied and the corresponding metallurgical recovery factors applied. Any assumptions or allowances made for deleterious elements. The existence of any bulk sample or pilot scale test work and the degree to which such samples are considered representative of the orebody as a whole. For minerals that are defined by a specification, has the ore reserve estimation been based on the appropriate mineralogy to meet the specifications? |
� � � |
comminution, flotation and concentrate dewatering circuits, with associated services and ancillaries, rated to treat approximately 1.0Mtpa of Run-Of-Mine (ROM) material and recover copper (metal) into a concentrate suitable for road transport for smelting off site. No bulk sample or pilot scale test work were undertaken, however, core drill samples representative of the orebody as a whole were used in metallurgical and mineralogy testwork. The metallurgical testwork to date has focussed on providing a firm guidance on grade, recovery and mass balance. Also completed were Bond Work index and mineralogical examination of concentrates. The current test work has optimised recoveries and usage of reagents. The metallurgical testwork indicated that, based on the processing flow chart adopted, the process plant will produce a copper grade of 24.6% at a recovery of 92.1%. A 30.3% Au recovery was |
| estimated. | ||||
| Environmental | � | The status of studies of potential environmental impacts of the mining and | � |
The Environmental and Social Impact Assessment (ESIA) was undertaken by Al Majal LLC |
| processing operation. Details of waste rock characterisation and the | (Oman), who is accredited by the Oman Federal Ministry of Environment (FMEnv). In terms of | |||
| consideration of potential sites, status of design options considered and, where | environmental impact, the ESIA reported that the areas directly affected by Alara’s proposed | |||
| applicable, the status of approvals for process residue storage and waste | mining and processing activities are predominantly barren land, all of which have limited | |||
| dumps should be reported. | agricultural use or environmental significance. There were no rare or endangered species of flora | |||
| or fauna identified in the proposed mine and operational areas, and furthermore the ESIA stated | ||||
| that anticipated environmental impacts from planned mining, processing and associated activities | ||||
| can be mitigated and managed via the requisite Environmental Management Plan, submitted as | ||||
| part of the ESIA. Alara submitted the ESIA to the FMEnv in March 2015 and following a public | ||||
| exposure period and a panel review by the FMEnv it is anticipated that ESIA will be approved | ||||
| shortly. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC | Code Explanation | Commentary | Commentary |
|---|---|---|---|---|
| Infrastructure | � | The existence of appropriate infrastructure: availability of land for plant | � | The Project is located approximately 120km southwest of the capital Muscat. |
| development, power, water, transportation (particularly for bulk commodities), labour, accommodation; or the ease with which the infrastructure can be provided, or accessed. |
� | Muscat, being the capital of Oman, is a well-established and serviced city; it has a large international airport with daily flights to Europe, the Middle East and other African nations and is connected to the Project by a well maintained duel carriageway tarmac road (driving time ~2 |
||
| hours). | ||||
| � | There is grid power in the vicinity with a further upgrade planned in 2018 at Khadra Bin Daffa, less | |||
| than 5km away from the Project. | ||||
| � | Alara will construct a 70km buried pipeline from the Nizwa sewage treatment plant to the provide | |||
| process water to the process plant site. Portable water will be drawn from nearby bores. | ||||
| � | Diesel fuel is delivered to site in bulk, via fuel tankers. The diesel fuel is unloaded to one 50, 000 L | |||
| bulk storage tank, which is the main diesel storage area next to the mine workshops. | ||||
| � | An accommodation village will be constructed on site. | |||
| Costs | � | The derivation of, or assumptions made, regarding projected capital costs in the | � | The capital and operating cost estimates are commensurate with a feasibility level study and were |
| study. | estimated by the study contributors as listed under the Study Status criteria discussed above. | |||
| � | The methodology used to estimate operating costs. | Contract mining was adopted as the basis of the Project and, as such, the mine equipment | ||
| � | Allowances made for the content of deleterious elements. | ownership cost is incorporated into the mine operating costs. | ||
| � � � � � |
The derivation of assumptions made of metal or commodity price(s), for the principal minerals and co- products. The source of exchange rates used in the study. Derivation of transportation charges. The basis for forecasting or source of treatment and refining charges, penalties for failure to meet specification, etc. The allowances made for royalties payable, both Government and private. |
� � � � |
No deleterious elements are present, with Cu prices based on long-term forecasts by the World Bank. The gold price was based on the prevailing gold price. The Omani Rial (RO) is pegged to the US$ with a foreign exchange rate of 2.60 (US$ : RO) Road transport of Cu concentrate to a local smelter at Lasail, some 370km to the northwest of the Project at a cost of US$18.30/t. Copper smelter terms were based on preliminary discussions with buyers and prevailing industry costs, with $80/t and $0.08/lb adopted for treatment charges and refining costs respectively. |
|
| � | The estimated capital costs for the Project are US$49.7M as summarised below. | |||
oPre-production mining US$ 6.3 |
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oProcessing US$17.7M |
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oUtilities and Infrastructure US$16.2M |
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oIndirects - EPCM and working capex US$6.3M |
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| - Contingency US$3.2M |
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| � | The estimated operatingcosts for the Project are US$3,698/t of copper. | |||
| Revenue factors | � | The derivation of, or assumptions made regarding revenue factors including | � | An average, life of mine head grade of 0.87% cu has been estimated. Cu recovery was estimated |
| head grade, metal or commodity price(s) exchange rates, transportation and | at 92%, producing a 24.6% copper concentrate. The average, life of mine gold grade was | |||
| treatment charges, penalties, net smelter returns, etc. | estimated at 0.22g/t. Au recovery was estimated at 30.3%. | |||
| � | The derivation of assumptions made of metal or commodity price(s), for the principal metals, minerals and co-products. |
� | Payable copper of 96.5% was adopted, with Cu treatment and refining charges of US$80/t and US$0.08/lb respectively. 90% payable gold was assumed, incurring refining charges of US$5/oz. |
|
| � | Cu pricing was based on the World Bank Cu pricing forecast for 2019 of US$5,593/t. The gold | |||
| price was set at US$1,200/oz,based on theprevailing goldprice. |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC | Code Explanation | Commentary | Commentary |
|---|---|---|---|---|
| Market assessment | � | The demand, supply and stock situation for the particular commodity, | � | The market assessment was undertaken by Alara. |
| � � � |
consumption trends and factors likely to affect supply and demand into the future. A customer and competitor analysis along with the identification of likely market windows for the product. Price and volume forecasts and the basis for these forecasts. For industrial minerals the customer specification, testing and acceptance requirements prior to a supply contract. |
� � |
Alara research found that its copper sulphide concentrate specification has broad acceptance amongst the world’s pyro metallurgical copper smelters. The anticipated copper grade range of 23-25% and the relatively high iron and sulphur level is attractive to smelters utilising flash furnaces smelting technology. In addition to a wide acceptance within Japan, Korea, Europe and Australia, the concentrate is appealing to Chinese and Indian smelters due to relatively low precious metals content. Based on World Bank and the Economist Intelligence Unit projections, with copper stocks being |
|
| relatively low, the copper price are projected to rise and the Cu pricing adopted for the economic | ||||
| analysis was based on the World Bank Cu pricing forecast for 2019 of $5,593/t. The World Bank | ||||
| forecast the Cuprice to rise to $7,000/t by2025. | ||||
| Economic | � | The inputs to the economic analysis to produce the net present value (NPV) in | � | The financial evaluation undertaken as part of the FS indicated a net present value (NPV) of |
| the study, the source and confidence of these economic inputs including | US$39M and an internal rate of return (IRR) of 26%. | |||
| � | estimated inflation, discount rate, etc. NPV ranges and sensitivity to variations in the significant assumptions and inputs. |
� | The key financial parameters were:-oDiscount rate 9% oCorporate social responsibility 15% |
|
| inc. royalties as % of Ebitda | ||||
oStart of construction 2017 |
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oConstruction period 1 year |
||||
oInitial capital expenditure US$49.7M |
||||
oSustaining capital (LOM) US$5.8M |
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oOperating cost US$3,698/t |
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oCu price US$5,593/t |
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oAu price US$1,200/oz |
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oPayback Less than 4 years |
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| � | Sensitivity analysis indicated that a 20% change in product price, operating cost and capital cost | |||
| resulted in the following impact on the NPV:- | ||||
oCu price ±120% |
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oOperating expenditure ±84% |
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oCapital expenditure ±26% |
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| Social | � | The status of agreements with key stakeholders and matters leading to social | � | The ESIA assessment indicated that, on balance, the Project would have a positive impact on the |
| licence to operate. | social aspects of the area. The ESIA gauged that the project would positively impact the local | |||
| stakeholder economy and the Local Government area and communities, predominantly by way of | ||||
| direct and indirect employment opportunities (including contract opportunities during the | ||||
| construction and operationalphases of theproposed mine). |
APPENDIX 1 - JORC Code 2012 Table 1
| Criteria | JORC | Code Explanation | Commentary | Commentary |
|---|---|---|---|---|
| Other | � | To the extent relevant, the impact of the following on the project and/or on the | � | Alara has submitted the ESIA and has no reason to believe that, after the public consultation |
| estimation and classification of the Ore Reserves: | period and a formal review of the ESIA, the necessary Government approvals will not be received | |||
| � | Any identified material naturally occurring risks. | within the timeframes anticipated in the feasibility study. | ||
| � | The status of material legal agreements and marketing arrangements. | |||
| � | The status of governmental agreements and approvals critical to the viability of | |||
| the project, such as mineral tenement status, and government and statutory | ||||
| approvals. There must be reasonable grounds to expect that all necessary | ||||
| Government approvals will be received within the timeframes anticipated in the | ||||
| Pre-Feasibility or Feasibility study. Highlight and discuss the materiality of any | ||||
| unresolved matter that is dependent on a third party on which extraction of the | ||||
| reserveis contingent. | ||||
| Classification | � | The basis for the classification of the Ore Reserves into varying confidence | � | Probable Ore Reserves were declared based on the Indicated Mineral Resources contained within |
| categories. | the pit design that was developed for the Project. The financial analysis showed that the Project is | |||
| � | Whether the result appropriately reflects the Competent Person’s view of the | economically viable and the risk analysis did not identify any insurmountable risks. | ||
| deposit. | ||||
| � | The proportion of Probable Ore Reserves that have been derived from | |||
| MeasuredMineral Resources (ifany). | ||||
| Audits or reviews | � | The results of any audits or reviews of Ore Reserve estimates. | � | No external audits or reviews of the Ore Reserve estimates have been undertaken. |
| Discussion of relative | � | Where appropriate a statement of the relative accuracy and confidence level in | � | The relative accuracy and confidence of the Ore Reserve estimate is inherent in the Ore Reserve |
| accuracy/ confidence | the Ore Reserve estimate using an approach or procedure deemed appropriate | Classification. | ||
| by the Competent Person. For example, the application of statistical or geostatistical procedures to quantify the relative accuracy of the reserve within stated confidence limits, or, if such an approach is not deemed appropriate, a qualitative discussion of the factors which could affect the relative accuracy and confidence of the estimate. |
� � � |
The statement relates to global estimates. No mine production data is available at this stage for reconciliation and/or comparative purposes. Factors that may affect the global tonnages and the associated grades include:- oAccuracy of the Mineral Resource estimate |
||
| � | The statement should specify whether it relates to global or local estimates, | oMining dilution |
||
| and, if local, state the relevant tonnages, which should be relevant to technical | oMining recovery |
|||
| and economic evaluation. Documentation should include assumptions made | oProcess plant performance |
|||
| and the procedures used. | � | There exists some uncertainty with regards to the hydro (geo) logical circumstances at the Project. | ||
| � | Accuracy and confidence discussions should extend to specific discussions of | In addition, it is recommended that the Unconfined Compressive Strength (UCS) database upon | ||
| any applied Modifying Factors that may have a material impact on Ore Reserve viability, or for which there are remaining areas of uncertainty at the current |
which the geotechnical assessment was based be enlarged so as to gain an increased understanding of the variability within the deposit. Furthermore, the collection of structural data to |
|||
| study stage. | assess the existence and or the level of continuity of discontinuity planes that dip out of the batter | |||
| � | It is recognised that this may not be possible or appropriate in all | face at angles between 50° and 55° should be confirmed with specifically designed geotechnical | ||
| circumstances. These statements of relative accuracy and confidence of the | drilling and surface mapping programmes. Similarly, a structural geologic investigation should be | |||
| estimate should be compared with production data, where available. | undertaken to assess the existence of major structures in the footwall and hangingwall. |