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

SECURING OUR FUTURE
ORE RESERVE AND MINERAL RESOURCE ESTIMATES
as at 31 December 2011
ORE RESERVES
Ore Reserves by reef (4E)
The figures in the table below represent Anglo American Platinum Limited’s (Amplats) attributable interests:
Reserves 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 Proved 63.9 89.2 5.05 4.97 322.7 443.5 10.4 14.3
Probable 49.1 51.0 5.16 5.05 253.4 257.7 8.1 8.3
Total 113.0 140.2 5.10 5.00 576.2 701.3 18.5 22.5
UG2 Reef Proved 390.7 425.9 4.10 4.14 1,600.7 1,762.2 51.5 56.7
Probable 250.0 204.2 4.78 4.72 1,194.1 963.3 38.4 31.0
Total 640.7 630.2 4.36 4.33 2,794.8 2,725.4 89.9 87.6
Platreef Proved 538.8 381.3 2.84 2.93 1,532.3 1,118.5 49.3 36.0
Proved primary
ore stockpiles 20.0 11.7 1.71 1.96 34.3 23.0 1.1 0.7
Probable 166.5 216.3 3.24 2.68 539.9 579.4 17.4 18.6
Total 725.4 609.4 2.90 2.82 2,106.6 1,720.9 67.7 55.3
All reefs Proved 1,013.4 908.2 3.44 3.69 3,490.1 3,347.2 112.2 107.6
Probable 465.7 471.5 4.27 3.82 1,987.4 1,800.4 63.9 57.9
Total 1,479.1 1,379.7 3.70 3.73 5,477.5 5,147.6 176.1 165.5
MSZ – Unki Platinum Mine Proved 15.0 14.3 3.68 3.69 55.2 52.9 1.8 1.7
Probable 23.7 27.3 3.85 3.82 91.2 104.4 2.9 3.4
Total 38.7 41.7 3.79 3.78 146.5 157.3 4.7 5.1
All reefs Proved 1,028.4 922.5 3.45 3.69 3,545.3 3,400.1 114.0 109.3
(including MSZ) Probable 489.3 498.8 4.25 3.82 2,078.7 1,904.8 66.8 61.2
Total 1,517.7 1,421.3 3.71 3.73 5,624.0 5,305.0 180.8 170.6
SOUTH AFRICA – TAILINGS
Tailings
Proved
Probable 18.9 21.8 0.86 1.13 16.2 24.6 0.5 0.8
Total 18.9 21.8 0.86 1.13 16.2 24.6 0.5 0.8
General
Rounding of figures may result in computational discrepancies.
Explanation of abbreviations
4E grade reported: Sum of platinum, palladium, rhodium and gold grades in grammes per tonne (g/t). The reported grades are as delivered for treatment.
Mt: Million tonnes
Moz: 4E Million troy ounces
MSZ: Main Sulphide Zone
Concentrator recoveries
Concentrator recoveries for Merensky Reef range from 80% to 89%, UG2 Reef from 70% to 86%, Platreef from 64% to 70% and Main Sulphide
Zone from 70% to 78%.
16 ANGLO AMERICAN PLATINUM LIMITED 2011