Base Metals

Copper

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. Rounding of figures may cause computational discrepancies. The Mineral Resources are additional to the Ore Reserves. The figures reported represent 100% of the Ore Reserves and Mineral Resources, the percentage attributable to Anglo American plc is stated separately.

Copper Division
Ore Reserves
Attributable   Tonnes
million
Grade
%Cu
Contained metal
thousand tonnes
% Classification 2007 2006 2007 2006 2007 2006
Los Bronces (OP) 100              
Sulphide (TCu)(1)   Proved 697.7 581.3 0.76 0.92 5,303 5,348
Flotation   Probable 782.7 190.3 0.58 0.74 4,540 1,408
    Total 1,480.4 771.6 0.66 0.88 9,842 6,756
Sulphide (TCu)   Proved 344.8 583.6 0.33 0.42 1,138 2,393
Dump Leach   Probable 672.6 553.8 0.25 0.34 1,682 1,883
    Total 1,017.4 1,137.4 0.28 0.38 2,819 4,276
El Soldado (OP and UG) 100        
Sulphide (TCu)   Proved 68.7 76.1 1.04 1.05 715 796
Flotation   Probable 50.7 49.9 0.82 0.83 418 415
Total 119.4 126.0 0.95 0.96 1,133 1,211
Oxide (TCu)(2)   Proved 1.5 0.87 13
Heap Leach   Probable 3.0 0.74 22
Total 4.6 0.78 36
Mantos Blancos (OP) 100        
Sulphide (ICu)   Proved 9.4 8.0 0.93 1.13 87 90
Flotation   Probable 19.3 24.8 1.05 0.88 203 217
Total 28.7 32.8 1.01 0.94 291 307
Oxide (ASCu)(3)   Proved 1.5 1.1 0.72 0.85 11 10
Vat and Heap Leach   Probable 44.0 28.7 0.44 0.56 195 160
Total 45.5 29.8 0.45 0.57 205 170
Oxide (ASCu)   Proved 0.5 0.5 0.24 0.26 1 1
Dump Leach   Probable 9.4 8.2 0.27 0.29 26 24
Total 10.0 8.7 0.27 0.29 27 25
Mantoverde (OP) 100        
Oxide (ASCu)   Proved 53.5 56.5 0.62 0.64 332 360
Heap Leach   Probable 11.2 10.7 0.57 0.59 64 63
Total 64.7 67.2 0.61 0.63 395 423
Oxide (ASCu)   Proved 28.1 32.3 0.36 0.37 101 120
Dump Leach   Probable 11.5 11.6 0.40 0.39 46 45
Total 39.7 43.9 0.37 0.38 147 165
Collahuasi (OP)(4) 44        
Oxide, Mixed and Secondary Sulphides (TCu)(5) Proved 43.9 14.3 0.80 0.99 352 142
Heap Leach   Probable 31.2 16.9 0.88 0.97 275 164
Total 75.2 31.2 0.83 0.98 626 306
Sulphide (TCu)(6)   Proved 279.0 193.5 0.99 1.09 2,762 2,108
Flotation – direct feed   Probable 1,180.0 1,145.8 0.96 0.97 11,328 11,164
Total 1,459.1 1,339.3 0.97 0.99 14,091 13,272
Low Grade Sulphide (TCu)(6) Proved
Flotation – stockpile   Probable 670.1 380.5 0.51 0.53 3,418 2,003
Total 670.1 380.5 0.51 0.53 3,418 2,003

Copper Division
Mineral Resources
Attributable   Tonnes
million
Grade
%Cu
Contained metal
thousand tonnes
% Classification 2007 2006 2007 2006 2007 2006
Los Bronces (OP) 100              
Sulphide (TCu)(1)   Measured 111.7 118.1 0.47 0.50 529 584
Flotation   Indicated 1,532.4 958.9 0.45 0.46 6,896 4,411
  Measured and Indicated 1,644.1 1,077.0 0.45 0.46 7,425 4,995
Inferred in Mine Plan 43.1 17.9 0.67 0.67 289 120
Sulphide (TCu)   Measured
Dump Leach   Indicated
  Measured and Indicated
Inferred in Mine Plan 312.4 66.3 0.19 0.33 594 218
El Soldado (OP and UG) 100              
Sulphide (TCu)   Measured 61.2 42.9 0.81 0.67 496 287
Flotation   Indicated 47.9 48.8 0.73 0.74 349 363
  Measured and Indicated 109.1 91.7 0.77 0.71 845 650
Inferred in Mine Plan 10.8 14.2 0.74 0.71 80 101
Oxide (TCu)   Measured 0.1 0.87 1
Heap Leach   Indicated 0.2 0.84 2
  Measured and Indicated 0.3 0.85 3
Inferred in Mine Plan 0.9 0.88 8
Mantos Blancos (OP) 100              
Sulphide (ICu)   Measured 17.7 12.6 0.75 0.83 133 105
Flotation   Indicated 112.8 71.7 0.70 0.83 791 595
  Measured and Indicated 130.5 84.3 0.71 0.83 924 700
Inferred in Mine Plan 4.2 2.8 0.82 1.02 34 29
Oxide (ASCu)   Measured 1.0 1.0 0.59 0.66 6 6
Vat and Heap Leach   Indicated 9.7 12.6 0.55 0.57 53 72
  Measured and Indicated 10.7 13.6 0.55 0.58 59 78
Inferred in Mine Plan 2.2 1.7 0.57 0.67 13 11
Oxide (ASCu)   Measured
Dump Leach   Indicated
  Measured and Indicated
Inferred in Mine Plan 1.1 0.8 0.24 0.27 3 2
Mantoverde (OP) 100              
Oxide (ASCu)   Measured 57.1 50.6 0.38 0.39 217 197
Heap Leach   Indicated 59.6 56.8 0.36 0.37 215 210
  Measured and Indicated 116.7 107.4 0.37 0.38 432 407
   
Inferred in Mine Plan 0.3 0.3 0.62 0.60 2 2
Oxide (ASCu)   Measured 1.2 0.32 4
Dump Leach   Indicated 4.3 1.7 0.33 0.31 14 5
  Measured and Indicated 4.3 2.9 0.33 0.31 14 9
Inferred in Mine Plan 0.6 0.4 0.37 0.34 2 2
Collahuasi (OP)(4) 44
Oxide, Mixed and Secondary Sulphides (TCu)(5) Measured 0.1 0.97 1
Heap Leach   Indicated 6.0 1.8 0.79 1.09 48 20
  Measured and Indicated 6.0 1.9 0.79 1.09 48 21
Inferred in Mine Plan 1.3 0.5 1.18 0.74 16 4
Sulphide (TCu)(6)   Measured 3.5 12.3 1.28 0.86 45 105
Flotation – direct feed   Indicated 570.3 189.1 1.10 0.89 6,274 1,680
  Measured and Indicated 573.8 201.4 1.10 0.89 6,318 1,785
Inferred in Mine Plan 374.0 202.2 0.95 0.93 3,553 1,878
Low Grade Sulphide (TCu)(6) Measured 2.9 35.0 0.50 0.45 14 157
Flotation – stockpile   Indicated 154.6 238.3 0.50 0.46 773 1,108
  Measured and Indicated 157.5 273.3 0.50 0.46 787 1,265
Inferred in Mine Plan 201.0 106.9 0.50 0.48 1,005 510

Mining method: OP = Open Pit, UG = Underground.
TCu = total copper, ICu = insoluble copper (total copper less acid soluble copper), ASCu = acid soluble copper.

(1) Los Bronces – Sulphide, Flotation: Updated cut-off grade and final pit design considered in the Los Bronces Development Project and new economic assumptions.

(2) El Soldado – Oxide, Heap Leach: As a result of exploration new Oxide Ore Reserves have been included in this statement.

(3) Mantos Blancos – Oxide, Vat and Heap Leach: Gains in Ore Reserves related mainly to old workings recognised during 2007 and new economic parameters which define a lower cut-off grade.

(4) Collahuasi: Unlike Xstrata (Collahuasi joint venture partner), Anglo American reports Mineral Resources in excess of those that have been converted to Ore Reserves and only those Inferred Resources that are in the Life of Mine plan.

(5) Collahuasi – Oxide, Mixed and Secondary Sulphides: Heap Leach ore includes secondary sulphide ore from Ujina Mine.

(6) Collahuasi – Sulphide, Flotation: Gains in Ore Reserves related mainly to new economic parameters, which define a lower cut-off grade, and new Mineral Resources added in Rosario Oeste due to a brownfields exploration programme.

The Ore Reserves and Mineral Resources of the following operations were reviewed during 2007 by independent consultants:
Los Bronces, Mantos Blancos, El Soldado, Mantoverde.