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PRODIGY GOLD NL — Capital/Financing Update 2012
May 14, 2012
65615_rns_2012-05-14_e3a9d001-41e4-4e20-90fd-4747d0326860.pdf
Capital/Financing Update
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ASX ANNOUNCEMENT / MEDIA RELEASE
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ASX:ABU
15 May, 2012
Old Pirate Stage 1 Scoping Study Results
ABM Resources NL (“ABM” or “The Company”) is pleased to announce the results of the Old Pirate Stage 1 Open Pit Scoping Study . The Old Pirate Gold Deposit is located in the Northern Territory of Australia on the same project as the Company's multi-million ounce resource at the Buccaneer Porphyry Gold Deposit. The Stage 1 Old Pirate open pit is modelled to contain 832,000t @ 11.5g/t gold for 308,000oz and is based on both Inferred and Indicated Resources Estimations as announced April 16[th] , 2012.
The presence of high grade coarse free gold at Old Pirate allows for construction of a simple Gravity Processing Plant with savings on capital expenditure and processing compared to conventional cyanide leach processing. Work is also on-going with Tanami Gold NL under the previously announced Memorandum of Understanding to consider processing Old Pirate material at the Coyote Gold Mine located 45 km from Old Pirate.
On-site Gravity Processing Plant. Assumes a 350,000 to 450,000 tonnes per annum gravity gold recovery plant is installed at Old Pirate:
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261,000 ounces gold recovered in Stage 1 open pit via gravity gold extraction methods. Stage 1 does not include cyanide leach, underground scenarios or integration of other gold bearing veins identified but not in the resource estimation.
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$27.1M capital expenditure (gravity plant, camp and associated infrastructure) paid back in the first 5 months of production.
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$257M Net Present Value (NPV) applying 0% discount rate (equivalent to cash flow over 2 years mine life).
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$228M NPV applying 9.8% discount rate.
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$511 per ounce of gold total operating cost inclusive of mining, processing, royalties and administration (cash cost ~$383 per ounce).
NOTE - Assumes $1600 per ounce realised gold price.
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Darren Holden, Managing Director, said, "We are very pleased with the outcomes of the Entech Scoping Study for Old Pirate. The study presents the potential for a low-cost and highly profitable open pit mining operation. Considering that the Scoping Study neither takes into account possible underground development nor is optimised to include known gold-bearing veins outside the resource, we are considering this as a first base case with upside yet to be factored in. ABM is currently exploring another three kilometres of prospective strike length of sedimentary horizons at Old Pirate targeting gold bearing vein material."
Scoping Study
ABM Resources contracted Entech Pty Ltd Mining Consultants to review the Old Pirate Gold Deposit resource estimation and to conduct an open pit optimisation study. The study was based on the Inferred and Indicated Resource models announced by the Company on 16[th] April, 2012. The study used a $1600 per ounce realised gold price. However, due to the very low operating costs, a sensitivity analysis was also run at $1200 per ounce gold price which also showed strong cash-flows.
ABM is continuing with aggressive extensional exploration at Old Pirate by drilling and trenching, with a view to upgrading resource categories and identifying further mineralised zones in the immediate area.
A Scoping Study is not a Feasibility Study. A Scoping Study is based on optimised mine designs, conceptual parameters, and it utilises general approximations based on similar deposits or mines. Refer to Appendix 2 for a more detailed review of parameters. It is important to note that Inferred Resources do not have a comparable reserve definition and hence resource definition requires upgrading (from Inferred Resource to Indicated or Measured Resource) prior to more definitive feasibility studies.
Open Pit Optimisation
The Inferred and Indicated Resource models were analysed with various parameters for mining rates and a series of "nested" pit shells were produced to assess the economic value. The uncut resource model was used with a dilution factor of 10% and a mining recovery factor of 95%. Mining and haulage costs were calculated at variable rates for increasing depth. Drill and blast costs were varied for oxide, transitional and fresh rock material.
Overall the models revealed an average of approximately 3,000 ounces of gold per vertical metre and a strip ratio of (ore:waste) 1:13 with a pit extending to a maximum depth of approximately 100 metres below natural land surface.
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Figure 1 Plan-view showing resource model and open pit design.
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Figure 2 Oblique 3D view (view to NE) showing resource model and open pit design.
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Standalone Gravity Processing Scenario
A standalone processing scenario involves a total capital expenditure of ~$27.1M for the processing plant and other facilities. Capital expenditure is based on the installation of a pre-constructed, modular gravity gold extraction facility. Preliminary metallurgical test work at Old Pirate has indicated that approximately 85% of the gold is extractable via simple gravity processing without the need for cyanide. The cost of a 50 tonne per hour (350,000 to 450,000 tonnes of material per annum) plant is estimated at $15M with an additional $12M required for a power plant, camp facilities, equipment and site works. The cost of processing is estimated at $35 per tonne. The plant and processing costs are based on discussions with gravity plant construction companies and are considered general approximations. Gold not extracted via gravity plant can possibly be reprocessed via cyanide methods at a later date and is not included in this Scoping Study.
The Scoping Study indicates an initial 2 year mine life for the Stage 1 pit which can be expanded with further extensional resource work and possible underground mining.
Table 1 below shows a summary of cash-flow from a standalone processing facility.
Table 1. Stand alone gravity gold processing facility for Old Pirate open pit.
| Item | Total | Unit | Year 1 | Year 2 |
|---|---|---|---|---|
| Milled Tonnes | 832,000 | T | 450,000 | 382,000 |
| Gold Grade | 11.5 | g/t | 10.9 | 16.0 |
| Recovered Gold | 261,000 | Oz | 112,000 | 149,000 |
| Revenue | 418.4 | $M | 179.6 | 238.7 |
| Capital Expenditure | 27.1 | $M | 26.5 | 0.7 |
| Operating Expenditure | 133.5 | $M | 75.9 | 57.6 |
| Total Expense | 160.6 | $M | 102.4 | 58.2 |
| Cash Flow | 257.8 | $M | 77.2 | 180.5 |
Note: Figures have been rounded therefore differences may occur
Table 2. Stand alone gravity gold processing facility summary of costs for Old Pirate.
| Stand Alone Scenario | Stand Alone Scenario | |
|---|---|---|
| Category | ||
| Cost ($M) | $/t ore | |
| Capital Expenditure | 27.1 | 32.2 |
| Mine Operating Costs | 60.9 | 73.2 |
| Processing | 29.1 | 35.0 |
| General and Administration | 10.0 | 12.0 |
| Royalties | 33.5 | 40.2 |
| Operating Cost Total (ex Capex) | 133.5 | 160.4 |
Note: Figures have been rounded therefore differences may occur
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Next Steps
The Old Pirate Deposit is located on an Exploration Licence and consists of both Inferred and Indicated Resources. ABM is currently trenching extensional veins at Old Pirate and a drilling program will commence shortly.
Further testing, resource definition, design, feasibility studies and environmental work along with regulatory approvals for a Mineral Lease need to be carried out before mining can commence. This work is on-going.
About ABM Resources
ABM Resources is an exploration company developing several gold discoveries in the Tanami-Arunta region of the Northern Territory of Australia. The Company has a multi-tiered approach to exploration and development with a combination of high grade potentially short-term production scenarios such as Old Pirate, large scale discoveries such as Buccaneer, and regional exploration discoveries such as the Kroda Gold Project. In addition, ABM Resources is committed to regional exploration programs throughout its extensive holdings.
ABM Resources is well capitalised to achieve its milestones in 2012 and into 2013 with over $26M in cash (quarterly report dated 31[st] March 2012).
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Figure 3. ABM Project Location Map Northern Territory.
Signed
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Darren Holden – Managing Director
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Competent Persons Statement
The information in this report that relates to Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Mr Darren Holden who is a Member of The Australasian Institute of Mining and Metallurgy. Mr Holden is a full time employee of ABM Resources NL and 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 2004 Edition of the “Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves”. Mr Holden consents to the inclusion in the documents of the matters based on this information in the form and context in which it appears.
The information in this report that relates to the Scoping Study was based on studies by Stuart Swapp (Grad Dip Mining, MPhys) and reviewed by Shane McLeay MAusIMM, BEng (Hons) who are both Mining Engineers and full time employees of Entech Mining Pty Ltd.
For Further Information Please Contact
Jutta Zimmermann CFO / Company Secretary +61 8 9423 9777
Darren Holden Managing Director +61 8 9423 9777
Berdine Mastaglia Investor Relations Manager +61 8 9423 9777
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Appendix 1 - ABM Resources - JORC Compliant Resources
(Refer to press release dated April 16th, 2012) for full details.
Table A1.1 Old Pirate Resource Estimation without utilising a top-cut.
| All Vein Models | Tonnes | Gold (g/t) | Ounces | |
|---|---|---|---|---|
| Indicated | 347,000 | 5.31 | 59,200 | |
| Inferred | 1,327,000 | 11.86 | 505,800 | |
| Total | 1,673,000 | 10.50 | 565,000 | |
| High Grade Vein | Tonnes |
Gold (g/t) | Ounces | |
| Models Only | ||||
| Indicated | 132,000 | 7.74 | 32,800 | |
| Inferred | 354,000 | 22.64 | 257,600 | |
| Total | 486,000 | 18.60 | 290,400 |
*Note - totals may vary due to rounding.
Table A1.2 Old Pirate Resource Estimation with utilising 300g/t top-cut
| All Vein Models | Tonnes | Gold (g/t) | Ounces | |
|---|---|---|---|---|
| Indicated | 347,000 | 5.25 | 58,500 | |
| Inferred | 1,327,000 | 8.65 | 368,900 | |
| Total | 1,673,000 | 7.95 | 427,400 | |
| High Grade Vein | Tonnes |
Gold (g/t) | Ounces | |
| Models Only | ||||
| Indicated | 132,000 | 7.62 | 32,200 | |
| Inferred | 354,000 | 17.52 | 199,400 | |
| Total | 486,000 | 14.84 | 231,600 |
*Note - totals may vary due to rounding.
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Table A1.3 Buccaneer Porphyry Gold Deposit Resource Update at varying cut-offs
| 0.2g/t cut off | Million Tonnes | Gold (g/t) | Million Ounces | |
|---|---|---|---|---|
| Indicated | 34.0 | 0.64 | 0.702 | |
| Inferred | 93.9 | 0.65 | 1.970 | |
| Total | 127.9 | 0.65 | 2.672 | |
| 0.4g/t cut-off | Million Tonnes | Gold (g/t) | Million Ounces | |
| Indicated | 24.2 | 0.77 | 0.600 | |
| Inferred | 64.1 | 0.80 | 1.657 | |
| Total | 88.3 | 0.80 | 2.257 | |
| 0.6g/t cut-off | Million Tonnes | Gold (g/t) | Million Ounces | |
| Indicated | 12.3 | 1.04 | 0.412 | |
| Inferred | 31.8 | 1.13 | 1.154 | |
| Total | 44.1 | 1.10 | 1.566 |
*Note - totals may vary due to rounding.
Table A1.4 Hyperion Gold Project Resource Estimation without top-cut
| 0.8g/t cut off | Tonnes | Gold (g/t) | Ounces | |
|---|---|---|---|---|
| Hyperion Central | 2,209,000 | 2.14 | 152,100 | |
| Hyperion South | 768,000 | 2.71 | 66,800 | |
| Total | 2,977,000 | 2.29 | 219,000 | |
| 2g/t cut-off | Tonnes | Gold (g/t) | Ounces | |
| Hyperion Central | 875,000 | 3.36 | 94,400 | |
| Hyperion South | 272,000 | 5.37 | 47,000 | |
| Total | 1,147,000 | 3.83 | 141,400 |
*Note - totals may vary due to rounding.
Table A1.5 Hyperion Gold Project Resource Estimation with 50g/t top-cut
| 0.8g/t cut off | Tonnes | Gold (g/t) | Ounces | |
|---|---|---|---|---|
| Hyperion Central | 2,209,000 | 2.06 | 146,600 | |
| Hyperion South | 768,000 | 2.25 | 55,500 | |
| Total | 2,977,000 | 2.11 | 202,200 | |
| 2g/t cut-off | Tonnes | Gold (g/t) | Ounces | |
| Hyperion Central | 875,000 | 3.17 | 89,100 | |
| Hyperion South | 272,000 | 4.08 | 35,700 | |
| Total | 1,147,000 | 3.38 | 124,800 |
*Note - totals may vary due to rounding.
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Appendix 2 - Optimisation and Scoping Study Parameters
A Scoping Study is a preliminary and conceptual study using mining cost parameters generally considered as industry averages or comparable to existing mining operations. The final production or feasibility parameters may differ from those used in the study.
Geotechnical Parameters
Note - detailed geotechnical work at Old Pirate has not been completed, and these parameters are based on typical factors used in Australian open pit projects.
Old Pirate Geotechnical Parameters
| Bench Height |
Batter Angle |
Berm Width |
|||
|---|---|---|---|---|---|
| Pit Name | Wall | Rock Type | |||
| Old Pirate | All | Oxide | 10m | 52o | 5m |
| Transitional | 20m | 62o | 5m | ||
| Fresh | 20m | 69o | 5m |
Old Pirate Optimisation Overall Wall Angles (Including Ramp)
| Material Type | Overall Slope Angle |
|---|---|
| Oxide | 38o |
| Transitional | 42o |
| Fresh | 45o |
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Old Pirate Optimisation Input Parameters
| Item | Units | Amount |
|---|---|---|
| Production Factors | ||
| Dilution | % | 10 |
| Mining recovery | % | 95 |
| Mining Costs | ||
| Haulage cost at Surface | $/BCM | 6.21 |
| Cost Increase with Depth | $/BCM /m | 0.02 |
| Drill and Blast | ||
| Oxide | $ / BCM | 1.71 |
| Transitional | $ / BCM | 3.03 |
| Fresh | $ / BCM | 5.28 |
| Processing | ||
| Recovery Gravity Only | ||
| Oxide | % | 85 |
| Transitional | % | 85 |
| Fresh | % | 85 |
| Processing cost | ||
| Oxide | $/t | 35 |
| Transitional | $/t | 35 |
| Fresh | $/t | 35 |
| Selling costs | ||
| Royalty 1 | % | 8.0 |
| Payability | % | 99.90 |
| RefiningCosts | $A / oz | 2.85 |
| Revenue | ||
| Sale Price | $A / oz | 1,600 |
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