Anglo American Annual Report 2012

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ORE RESERVES AND MINERAL RESOURCESPLATINUM GROUP METALSestimates as at 31 December 2012Platinum – Other ProjectsTonnes (1) Grade (2) Contained Metal (3) Contained MetalMINERAL RESOURCESClassification 2012 2011 2012 2011 2012 2011 2012 2011South Africa Mt Mt 3E PGE 3E PGE 3E tonnes 3E tonnes 3E Moz 3E MozBoikgantsho (4) Measured – – – – – – – –Platreef Indicated 37.0 37.0 1.30 1.30 47.9 47.9 1.5 1.5Measured and Indicated 37.0 37.0 1.30 1.30 47.9 47.9 1.5 1.5Inferred 1.8 1.8 1.14 1.14 2.1 2.1 0.1 0.13E PGE3E PGESheba’s Ridge (5) Measured 28.0 28.0 0.88 0.88 24.6 24.6 0.8 0.8Indicated 34.0 34.0 0.85 0.85 29.1 29.1 0.9 0.9Measured and Indicated 62.0 62.0 0.87 0.87 53.6 53.6 1.7 1.7Inferred 149.9 149.9 0.96 0.96 144.5 144.5 4.6 4.6Brazil 3E PGE 3E PGEPedra Branca (6) Inferred 6.6 6.6 2.27 2.27 15.0 15.0 0.5 0.5Due to the uncertainty that may be attached to some Inferred Mineral Resources, it cannot be assumed that all or part of an Inferred Mineral Resource will necessarily be upgraded to an Indicated orMeasured Resource after continued exploration.(1)Tonnes: Quoted as dry metric tonnes.(2)Grade: 3E PGE is the sum of Platinum, Palladium and Gold grades in grammes per tonne (g/t).(3)Contained Metal: Contained Metal is presented in metric tonnes and million troy ounces (Moz).(4)Boikgantsho: Anglo American Platinum holds an attributable interest of 49% of the Joint Venture between Anglo American Platinum and Atlatsa Resources. A cut-off grade of 1g/t (3E PGE) isapplied for resource definition.(5)Sheba’s Ridge: Anglo American Platinum holds an attributable interest of 35% of the Joint Venture between Anglo American Platinum, Aquarius Platinum and the South African IndustrialDevelopment Corporation (IDC). A cut-off grade of 0.5g/t (3E PGE) is applied for resource definition.(6)Pedra Branca: Anglo American Platinum holds an attributable interest of 51% of the Joint Venture between Anglo American Platinum and Solitario Resources & Royalty. A cut-off of 0.7g/t (3E PGE) isapplied for resource definition.The following operations and projects contributed to the combined 2012 Ore Reserve and Mineral Resource estimates stated per reef (excluding Other Projects):Operations: Resource Types % Mine LifeBafokeng Rasimone Platinum Mine (BRPM) MR/UG2 33% 24Bathopele Mine UG2 100% 14Bokoni Platinum Mine MR/UG2 49% 30Dishaba Mine MR/UG2 100% 30Khomanani Mine MR/UG2 100% 15Khuseleka Mine MR/UG2 100% 24Kroondal Platinum Mine UG2 50% 6Marikana Platinum Mine UG2 50% 6Modikwa Platinum Mine MR/UG2 50% 29Mogalakwena Mine PR 100% 30Mototolo Platinum Mine UG2 50% 5*Pandora UG2 42.5% 26Siphumelele 1 Mine MR/UG2 100% 18Siphumelele 2 Mine (School of Mines) MR/UG2 100% 3Thembelani Mine MR/UG2 100% 25Tumela Mine MR/UG2 100% 22Twickenham Platinum Mine MR/UG2 100% 30Union North Mine MR/UG2 85% 18Union South Mine MR/UG2 85% 22Unki Mine MSZ 100% 30Projects: %Der Brochen Project MR/UG2 100%Ga-Phasha PGM Project MR/UG2 49%Magazynskraal Project MR/UG2 20%Other Exploration Projects (portions of Driekop/Rustenburg) MR/UG2 37.5% to 100%Rustenburg – Non-Mine Projects MR/UG2 100%MR = Merensky Reef, UG2 = UG2 Reef, PR = Platreef, MSZ = Main Sulphide Zone;% = Anglo American Platinum Limited attributable interest;Mine Life = The extraction period in years for scheduled Ore Reserves comprising Proved and Probable Reserves only considering the combined MR and UG2 production where applicable;* Only 5 years of Ore Reserves are declared as per Xstrata policy.Information was provided by the Joint Venture partners for the following operations and projects:Operations – BRPM, Bokoni, Kroondal, Marikana, Modikwa, Mototolo, Pandora (only Ore Reserve information for BRPM and Modikwa)3E Projects – Pedra Branca, Sheba’s Ridge4E Projects – Ga-Phasha, MagazynskraalAudits related to the generation of the Ore Reserve and Mineral Resource estimates were carried out by independent consultants during 2012 at the following operations:Dishaba, Mogalakwena, Tumela, Union North, Union South and Unki.(3)216 Anglo American plc Annual Report 2012
ORE RESERVES AND MINERAL RESOURCESDIAMONDSestimates as at 31 December 2012DE BEERS CANADAThe Diamond Reserve and Diamond Resource estimates were compiled in accordance with Canadian National Instrument 43-101 – Standards of Disclosurefor Mineral Projects (NI 43-101). The figures reported represent 100% of the Diamond Reserves and Diamond Resources. Diamond Resources are quoted asinclusive of those used to calculate Diamond Reserves and must not be added to the Diamond Reserves. Rounding of figures may cause computationaldiscrepancies.De Beers Canada – OperationsBCOTonnes Grade Saleable CaratsDIAMOND RESERVES Attributable % LOM (mm) Classification 2012 2011 2012 2011 2012 2011Snap Lake (UG) (1) 85.0 18 1.14 Mt Mt cpht cpht M¢ M¢Kimberlite Proved – – – – – –Probable 1.6 – 123.07 – 2.0 –Total 1.6 – 123.07 – 2.0 –Victor (OP) 85.0 6 1.50 cpht cphtKimberlite Proved – – – – – –Probable 12.1 – 19.42 – 2.3 –Total 12.1 – 19.42 – 2.3 –De Beers Canada Inc. 85.0 multiple cpht cphtTOTAL Proved – – – – – –Probable 13.7 – 31.68 – 4.3 –Total 13.7 – 31.68 – 4.3 –De Beers Canada – OperationsBCOTonnes Grade CaratsDIAMOND RESOURCES Attributable % (mm) Classification 2012 2011 2012 2011 2012 2011Snap Lake (UG) (1) 85.0 1.14 Mt Mt cpht cpht M¢ M¢Kimberlite Measured – – – – – –Indicated 2.5 – 189.27 – 4.7 –Measured and Indicated 2.5 – 189.27 – 4.7 –Inferred 23.1 – 176.54 – 40.9 –Victor (OP) 85.0 1.50 cpht cphtKimberlite Measured – – – – – –Indicated 12.9 – 19.34 – 2.5 –Measured and Indicated 12.9 – 19.34 – 2.5 –Inferred 17.9 – 22.17 – 4.0 –De Beers Canada Inc. 85.0 multiple cpht cphtTOTAL Measured – – – – – –Indicated 15.4 – 46.87 – 7.2 –Measured and Indicated 15.4 – 46.87 – 7.2 –Inferred 41.1 – 109.16 – 44.8 –DIAMOND RESOURCES INCLUDE DIAMOND RESERVESDe Beers Canada – ProjectsBCOTonnes Grade Saleable CaratsDIAMOND RESERVES Attributable % LOM (mm) Classification 2012 2011 2012 2011 2012 2011Gahcho Kué (OP) (2) 43.4 11 1.00 Mt Mt cpht cpht M¢ M¢Kimberlite Proved – – – – – –Probable 31.0 – 153.71 – 47.6 –Total 31.0 – 153.71 – 47.6 –De Beers Canada – ProjectsBCOTonnes Grade CaratsDIAMOND RESOURCES Attributable % (mm) Classification 2012 2011 2012 2011 2012 2011Gahcho Kué (OP) (2) 43.4 1.00 Mt Mt cpht cpht M¢ M¢Kimberlite Measured – – – – – –Indicated 30.2 – 163.87 – 49.6 –Measured and Indicated 30.2 – 163.87 – 49.6 –Inferred 6.0 – 168.86 – 10.1 –DIAMOND RESOURCES INCLUDE DIAMOND RESERVESMining method: OP = Open Pit, UG = Underground.LOM = Life of Mine (years) is based on scheduled Probable Reserves including Indicated and some Inferred Resources considered for Life of Mine planning.Unless stated otherwise tonnage is quoted as dry metric tonnes. Estimates of Diamond Reserve tonnes reflect the tonnage to be treated.Reported Diamond Reserves/Resources are based on a Bottom Cut Off (BCO) which refers to the bottom screen size aperture and varies between 1.00mm and 3.00mm (nominal square mesh).Grade is quoted as carats per hundred metric tonnes (cpht).Due to the uncertainty that may be attached to some Inferred Mineral Resources, it cannot be assumed that all or part of an Inferred Mineral Resource will necessarily be upgraded to an Indicatedor Measured Resource after continued exploration.(1)Snap Lake: Due to the high costs associated with resource development, Indicated Resources are continuously developed from underground infrastructure ahead of the mining face, resulting in an18 month rolling reserve.(2)Gahcho Kué: The project approval is subject to the successful conclusion of permitting and regulatory approvals. Gahcho Kué is a Joint Venture between De Beers Canada Inc. and MountainProvince Diamonds Inc.Ore Reserves and Mineral ResourcesAudits related to the generation of the Ore Reserve and Mineral Resource estimates were carried out by independent consultants during 2012 at the following operations:Snap Lake and Victor.Anglo American plc Annual Report 2012 217
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A BALANCEDPORTFOLIOWITH THE FUTURE
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