ore reserves and mineral resources 2011 report - Anglo American ...

SECURING OUR FUTURE
ORE RESERVE AND MINERAL RESOURCE ESTIMATES
as at 31 December 2011
MINERAL RESOURCES
Mineral Resources inclusive of Ore Reserves by reef (4E)
The figures in the table below represent Anglo American Platinum Limited’s (Amplats) attributable interests:
Resources Grade 4E Contained 4E Contained 4E
Reef Category million tonnes g/t tonnes million troy ounces
2011 2010 2011 2010 2011 2010 2011 2010
SOUTH AFRICA
Merensky Reef Measured 230.4 229.3 5.98 5.99 1,378.5 1,374.4 44.3 44.2
Indicated 303.5 297.9 5.72 5.78 1,734.3 1,721.8 55.8 55.4
Measured and Indicated 533.9 527.2 5.83 5.87 3,112.8 3,096.2 100.1 99.5
Inferred 569.8 615.5 5.20 5.43 2,961.5 3,340.2 95.2 107.4
Total 1,103.7 1,142.7 5.50 5.63 6,074.3 6,436.4 195.3 206.9
UG2 Reef Measured 861.7 842.6 5.32 5.36 4,586.3 4,516.5 147.5 145.2
Indicated 702.8 667.5 5.32 5.52 3,739.3 3,687.7 120.2 118.6
Measured and Indicated 1,564.6 1,510.1 5.32 5.43 8,325.6 8,204.2 267.7 263.8
Inferred 669.1 760.2 5.22 5.53 3,494.9 4,202.8 112.4 135.1
Total 2,233.7 2,270.3 5.29 5.46 11,820.4 12,407.0 380.0 398.9
Platreef Measured 803.3 522.6 2.69 2.76 2,160.9 1,443.7 69.5 46.4
1.0 g/t cut-off Indicated 1,155.3 1,086.6 2.36 2.29 2,723.7 2,485.4 87.6 79.9
Measured and Indicated 1,958.6 1,609.2 2.49 2.44 4,884.5 3,929.1 157.0 126.3
Inferred 1,585.5 1,200.1 2.14 1.88 3,386.0 2,260.3 108.9 72.7
Total 3,544.1 2,809.3 2.33 2.20 8,270.6 6,189.5 265.9 199.0
All reefs Measured 1,895.5 1,594.6 4.29 4.60 8,125.7 7,334.7 261.2 235.8
Indicated 2,161.6 2,051.9 3.79 3.85 8,197.2 7,894.9 263.5 253.8
Measured and Indicated 4,057.0 3,646.5 4.02 4.18 16,323.0 15,229.6 524.8 489.6
Inferred 2,824.4 2,575.9 3.48 3.81 9,842.4 9,803.3 316.4 315.2
Total 6,881.5 6,222.4 3.80 4.02 26,165.3 25,032.9 841.2 804.8
MSZ – Unki Platinum Measured 23.5 24.4 4.22 4.23 99.1 103.1 3.2 3.3
Mine Indicated 50.2 50.2 4.21 4.21 211.3 211.3 6.8 6.8
Measured and Indicated 73.7 74.6 4.21 4.21 310.4 314.5 10.0 10.1
Inferred 49.7 49.7 4.12 4.12 204.5 204.5 6.6 6.6
Total 123.4 124.3 4.17 4.17 514.9 518.9 16.6 16.7
All reefs Measured 1,919.0 1,619.0 4.29 4.59 8,224.8 7,437.8 264.4 239.1
(including MSZ) Indicated 2,211.8 2,102.2 3.80 3.86 8,408.5 8,106.2 270.3 260.6
Measured and Indicated 4,130.8 3,721.2 4.03 4.18 16,633.4 15,544.0 534.8 499.8
Inferred 2,874.1 2,625.6 3.50 3.81 10,046.8 10,007.8 323.0 321.8
Total 7,004.9 6,346.7 3.81 4.03 26,680.2 25,551.8 857.8 821.5
22 ANGLO AMERICAN PLATINUM LIMITED 2011