Review of international Operations
Cerro Corona Gold Mine
Technical short form report (PDF - 1MB)
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| PRODUCTION: 393,000 ozs TOTAL CASH COSTS: US$348/oz |
Gold Fields Limited signed a definitive agreement in December 2003 to purchase an 80.7% economic and 92% voting interest in the Cerro Corona project from Sociedad Minera Corona S.A., or SMC, a Peruvian family-owned company. The agreement called for a corporate reorganisation whereby the assets of the Cerro Corona project were transferred to a Peruvian company called Gold Fields La Cima S.A. (formerly known as Sociedad Minera La Cima S.A.) in July 2004.
The environmental impact assessment (EIA) for the project was submitted to the Peruvian Ministry of Energy and Mines, or MEM, in May 2005. The EIA was approved following a process of public consultation and comment, on 2 December 2005. Gold Fields Limited subsequently completed the purchase of a 92% voting interest (80.7% economic interest) in the Cerro Corona Project in January 2006.
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Units |
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31 Dec |
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June 2010 |
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June 2009 |
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June 2008 |
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2010* |
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Open pit mining |
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Waste mined |
000 tonnes |
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3,036 |
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7,366 |
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4,894 |
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5,762 |
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Sulphide tonnes mined |
000 tonnes |
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3,128 |
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6,248 |
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5,044 |
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939 |
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Strip ratio |
waste: ore |
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1.0 |
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1.2 |
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1.0 |
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6.1 |
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Au mined grade |
g/t |
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1.2 |
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1.1 |
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1.2 |
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1.2 |
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Cu mined grade |
% |
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0.7 |
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0.8 |
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0.8 |
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0.4 |
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Source of ore |
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Sulphide tonnes milled |
000 tonnes |
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3,102 |
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6,141 |
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4,547 |
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Au head grade |
g/t |
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1.29 |
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1.14 |
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1.24 |
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Cu head grade |
% |
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0.79 |
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0.85 |
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0.78 |
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Concentrate produced |
tonnes |
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92,388 |
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194,201 |
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118,848 |
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Gold produced |
koz |
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80 |
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139 |
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105 |
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Copper produced |
kt |
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20 |
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41 |
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24 |
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Total gold equivalent produced |
eq koz |
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200 |
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394 |
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219 |
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Total gold equivalent sold |
eq koz |
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201 |
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390 |
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218 |
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Operation cost |
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Operating cost |
US$/oz |
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388 |
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343 |
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394 |
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Cash cost |
US$ (million) |
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79.5 |
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135.6 |
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80.3 |
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Cash cost |
US$/oz |
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395 |
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348 |
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369 |
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Capital expenditure |
US$/oz |
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156 |
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217 |
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532 |
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NCE |
US$/oz |
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545 |
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561 |
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926 |
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General |
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Number of employees (TEC) |
No |
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997 |
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1 128 |
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875 |
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543 |
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Expected LoM |
years |
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14 |
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15 |
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15 |
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16 |
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Mineral Reserves |
Mt |
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86.2 |
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89.2 |
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89.3 |
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94.1 |
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Au head grade of Mineral Reserves |
g/t |
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1 |
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1 |
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1.0 |
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1.0 |
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Cu head grade of Mineral Reserves |
% |
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0.5 |
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0.5 |
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0.50 |
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0.51 |
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