Platinum

Operations (per reef)

The Ore Reserve and Mineral Resource estimates were compiled in accordance with the Australasian Code for Reporting of Mineral Resources and Ore Reserves (The JORC Code, 2004) as a minimum standard. Where relevant, the estimates were also prepared in compliance with regional codes and requirements (e.g. The South African Code for Reporting of Mineral Resources and Mineral Reserves, The SAMREC Code, 2007). Rounding of figures may cause computational discrepancies. The Mineral Resources are additional to the Ore Reserves. Merensky and UG2 Reef Mineral Resources are reported over an economic and mineable cut appropriate to the specific reef. The mineable cuts collectively form the basis of the consolidated reef figures. Details of the individual operations appear in the Anglo Platinum Annual Report. The figures reported represent 100% of the Mineral Resources and Ore Reserves attributable to Anglo Platinum Limited unless otherwise noted. Anglo American plc’s interest in Anglo Platinum is 76.53%.

Anglo Platinum
Ore Reserves
    Tonnes(1)
million
Grade(2)
g/t
Contained metal
tonnes
Contained metal
million troy ounces
Classification 2007 2006 2007 2006 2007 2006 2007 2006
Merensky Reef(3)(4) 4E PGE 4E PGE Moz Moz
Proved 88.7 95.5 5.22 5.54 462.6 529.1 14.9 17.0
Probable 117.2 105.9 5.11 5.78 598.5 612.4 19.2 19.7
Total 205.8 201.4 5.16 5.67 1,061.1 1,141.5 34.1 36.7
UG2 Reef(5)(6) 4E PGE 4E PGE Moz Moz
Proved 415.7 347.2 4.37 4.57 1,816.0 1,585.1 58.4 51.0
Probable 413.5 403.5 4.32 4.37 1,787.1 1,761.6 57.5 56.6
Total 829.2 750.7 4.35 4.46 3,603.1 3,346.7 115.8 107.6
Platreef(7)(8) 4E PGE 4E PGE Moz Moz
Proved 284.6 319.6 3.24 3.27 923.2 1,045.5 29.7 33.6
Proved primary ore stockpile(9) 19.8 16.4 2.54 2.66 50.1 43.7 1.6 1.4
Probable 114.0 110.8 3.51 3.67 400.1 406.9 12.9 13.1
Total 418.3 446.9 3.28 3.35 1,373.4 1,496.0 44.2 48.1
All Reefs 4E PGE 4E PGE Moz Moz
Proved 808.6 778.7 4.02 4.11 3,251.9 3,203.3 104.6 103.0
Probable 644.6 620.3 4.32 4.48 2,785.7 2,781.0 89.6 89.4
Total 1,453.3 1,399.0 4.15 4.28 6,037.6 5,984.2 194.1 192.4
Total (alternative units)(10) 1,601.9Mton 1,542.1Mton 0.121oz/t 0.125oz/t        
Tailings(11) 4E PGE 4E PGE Moz Moz
Proved
Probable 38.6 43.6 0.92 1.00 35.5 43.7 1.1 1.4
Total 38.6 43.6 0.92 1.00 35.5 43.7 1.1 1.4
Total (alternative units)(10) 42.6Mton 48.1Mton 0.027oz/t 0.029oz/t        

(1) Tonnage: quoted as metric tonnes.

(2) Grade: 4E PGE is the sum of platinum, palladium, rhodium and gold grades in grammes per tonne (g/t).

(3) Merensky Reef: The reserve pay-limit varies across all operations between 1.3g/t and 4.8g/t. The variability is a function of various factors including the depth of the orebody, geological complexity and infrastructure.

(4) Merensky Reef: The decrease in the reserve grade is mainly a function of changes occurring at BRPM and Amandelbult. BRPM – changes in the mining method and mine design resulted in a higher stope width and consequent drop in grade. Amandelbult – in-fill drilling revealed increased geological complexity resulting in a drop in the resource grade. The drop in the resource grade plus a change in the modifying factors resulted in a decrease in the reserve grade.

(5) UG2 Reef: The reserve pay-limit varies across all operations between 1.3g/t and 4.4g/t. The variability is a function of various factors including the depth of the orebody, geological complexity and infrastructure.

(6) UG2 Reef: The increase in reserve tonnage is mainly due to conversion of resources to reserves as a result of Pre-Feasibility studies completed for Rustenburg Section (Frank and Turffontein).

(7) Platreef: The reserve cut-off is 1.7g/t for fresh ore and 3.0g/t for weathered/oxidised ore.

(8) Platreef: A programme of blast-hole drilling indicated higher than expected proportions of oxidised material below the economically recoverable grade. Approximately half of the tonnage (~15Mt) was removed as waste and the remainder has been removed from the Ore Reserve due to the change in cut-off grade applied to the oxidised zone.

(9) Platreef stockpiles: These are reported separately as Proved Ore Reserves and aggregated into the summation tabulations.

(10) Alternative units: tonnage in million short tons (Mton) and grade in troy ounces per short ton (oz/t).

(11) Tailings: These are reported separately as Ore Reserves but are not aggregated in the total Ore Reserve figures. Operating tailings dams for current mining operations cannot be geologically assessed and therefore are not reported as part of the Ore Reserves. At Rustenburg and Union Section historical dams have been evaluated and the tailings are included in the Ore Reserves statement.

The following operations and projects were reviewed during 2007 by independent consultants:
Amandelbult Section, Lebowa Platinum Mines, PPRust, Rustenburg Section, Union Section, Booysendal Project, Der Brochen Project, BRPM (Styldrift), Twickenham Platinum.


Anglo Platinum
Mineral Resources
    Tonnes(1) million Grade(2)
g/t
Contained metal
tonnes
Contained metal
million troy ounces
Classification 2007 2006 2007 2006 2007 2006 2007 2006
Merensky Reef(3)(4)(5) 4E PGE 4E PGE Moz Moz
Measured 107.8 96.4 5.33 5.42 574.4 523.0 18.5 16.8
Indicated 276.5 248.3 5.29 5.39 1,462.7 1,337.8 47.0 43.0
Measured and Indicated 384.3 344.7 5.30 5.40 2,037.1 1,860.7 65.5 59.8
Inferred 876.5 1,095.9 5.29 5.48 4,633.0 6,010.9 149.0 193.3
Total 1,260.8 1,440.6 5.29 5.46 6,670.1 7,871.6 214.4 253.1
UG2 Reef(3)(6)(7) 4E PGE 4E PGE Moz Moz
Measured 337.2 312.3 5.69 5.52 1,919.0 1,725.3 61.7 55.5
Indicated 499.7 634.3 5.38 5.37 2,686.9 3,404.9 86.4 109.5
Measured and Indicated 836.9 946.6 5.50 5.42 4,605.9 5,130.3 148.1 164.9
Inferred 1,223.2 1,321.4 5.22 5.54 6,379.8 7,325.5 205.1 235.5
Total 2,060.0 2,268.0 5.33 5.49 10,985.7 12,455.7 353.2 400.5
Platreef(8)(9) 4E PGE 4E PGE Moz Moz
Measured 176.8 158.8 1.93 1.91 340.8 303.2 11.0 9.7
Indicated 790.6 791.2 2.21 2.22 1,749.4 1,757.7 56.2 56.5
Measured and Indicated 967.4 950.0 2.16 2.17 2,090.2 2,061.0 67.2 66.3
Inferred 1,408.0 1,449.4 1.88 1.82 2,647.7 2,643.9 85.1 85.0
Total 2,375.4 2,399.4 1.99 1.96 4,737.9 4,704.9 152.3 151.3
All Reefs 4E PGE 4E PGE Moz Moz
Measured 621.8 567.6 4.56 4.50 2,834.2 2,551.5 91.1 82.0
Indicated 1,566.8 1,673.8 3.77 3.88 5,899.0 6,500.5 189.7 209.0
Measured and Indicated 2,188.6 2,241.4 3.99 4.04 8,733.2 9,052.0 280.8 291.0
  Inferred 3,507.6 3,866.7 3.89 4.13 13,660.5 15,980.3 439.2 513.8
Total 5,696.2 6,108.1 3.93 4.10 22,393.7 25,032.3 720.0 804.8
Total (alternative units)(10) 6,278.9Mton 6,732.9Mton 0.115oz/t 0.120oz/t        
Tailings(11) 4E PGE 4E PGE Moz Moz
Measured
Indicated 151.4 152.3 1.05 1.06 159.7 160.9 5.1 5.2
Measured and Indicated 151.4 152.3 1.05 1.06 159.7 160.9 5.1 5.2
Inferred
Total 151.4 152.3 1.05 1.06 159.7 160.9 5.1 5.2
Total (alternative units)(10) 166.9Mton 167.9Mton 0.031oz/t 0.031oz/t        

(1) Tonnage: quoted as metric tonnes.

(2) Grade: 4E PGE is the sum of platinum, palladium, rhodium and gold grades in grammes per tonne (g/t).

(3) Merensky and UG2 Reefs: Due to the South African Department of Minerals and Energy’s (DME) refusal to grant certain Prospecting Right applications and an undertaking by Anglo Platinum Limited not to advance legal proceedings, pending negotiations with the DME and third parties, the following Mineral Resource estimates are not included: Merensky Reef: 161.3Mt @ 5.78g/t (30.0Moz), UG2 Reef: 189.5Mt @ 6.00g/t (36.5Moz); 94.6% of the above mentioned combined Merensky and UG2 Reef Mineral Resources are in the Inferred Resource category; The 66.5Moz reflects a loss of 8.5% of Anglo Platinum’s total Mineral Resources.

(4) Merensky Reef: Depending on the reef characteristics a 2.5g/t to 3.0g/t cut-off has been used to identify Mineral Resources.

(5) Merensky Reef: Measured and Indicated resource tonnages increased mainly due to in-fill drilling leading to increased confidence in the estimates at the Der Brochen and Booysendal projects. At Union Section, updated economic assumptions showed that the area below 28 level is currently no longer economically viable and therefore reserve tonnes have been re-allocated to resources.

(6) UG2 Reef: A 1.8g/t cut-off has been used to identify Mineral Resources.

(7) UG2 Reef: A decrease in the total Measured and Indicated Resource tonnages is mainly as a result of conversion of resources to reserves at Rustenburg Section due to the completion of Pre-Feasibility studies for Frank and Turffontein, and a re-evaluation at Der Brochen due to new information highlighting higher geological complexity.

(8) Platreef: A 1.0g/t cut-off has been used to identify Mineral Resources.

(9) Platreef: In-fill drilling resulted in geological re-interpretation, increased confidence and a consequent increase of Measured Resources.

(10) Alternative units: tonnage in million short tons (Mton) and grade in troy ounces per short ton (oz/t).

(11) Tailings: These are reported separately as Mineral Resources but are not aggregated in the total Mineral Resource figures. Operating tailings dams for current mining operations cannot be geologically assessed and therefore are not reported as part of the Mineral Resources. At Rustenburg and Union Section historical dams have been evaluated and the tailings are included in the Mineral Resource statement.

The following Operations and Projects contributed to the combined 2007 Ore Reserve and Mineral Resource estimates stated per reef (excluding Other Projects): (MR = Merensky Reef, UG2 = UG2 Reef, PR = Platreef)

Amandelbult Section – MR/UG2
Booysendal Project – MR/UG2
BRPM – MR/UG2
Der Brochen Project – MR/UG2
Ga-Phasha PGM Project – MR/UG2
Kroondal PSA 1 – UG2
Lebowa Platinum Mines – MR/UG2
Magazynskraal 3 JQ – MR/UG2
Marikana PSA 2 – UG2
Modikwa Platinum Mine – MR/UG2
Mototolo – UG2 Northam – MR/UG2
Other Exploration Projects (Ptn. of Driekop) – UG2
Pandora – UG2
PPRust (Potgietersrust Platinums Ltd.) – PR
Rustenburg Section – MR/UG2
Twickenham Platinum Mine Project – MR/UG2
Union Section – MR/UG2
WBJV – MR/UG2