Review of International Operations
Agnew Gold Mine
Technical short form report (PDF - 2MB)
The Agnew Gold Mining Company Pty Limited is wholly owned by Gold Fields Limited and currently holds tenements covering an area of approximately 68,138 hectares. Agnew is located some 375 kilometres north of Kalgoorlie in the same geological region as St Ives Gold Mine, and exploits shear-hosted auriferous zones from the highly mineralised Norseman-Wiluna Greenstone Belt.
Agnew represents a solid base for Gold Fields’ growth in the region and is an important contributor to the stated vision, “To be the global leader in sustainable gold mining”, with a target contribution from the Australasia Region of ~1.0 Moz per annum by 2015 in production or development.
Main strategic aims for the company are the discovery of additional Mineral Reserve sources to supplement Waroonga in the short term and the discovery of a significant new ore complex to replace Waroonga in the medium to long term.
Reported Mineral Reserves at Agnew were maintained at 1.3 Moz from December 2010 to December 2011, including the impact of depletion at 224 koz, indicating an effective increase of 205 koz. Changes from December 2010 were dominated by extensions to the main ore body at the Waroonga Underground Complex and the impact of higher gold price assumptions for the December 2011 statement.
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Open pit mining |
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|
|
|
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Total mined |
kt |
1,610 |
|
|
|
|
393 |
|
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Waste mined |
kt |
1,024 |
|
|
|
|
191 |
|
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Ore mined |
kt |
586 |
|
|
|
|
202 |
|
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Mined grade |
g/t |
1.6 |
|
|
|
|
3.2 |
|
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Strip ratio (tonnes) |
waste : ore |
2.1 |
|
|
|
|
1.0 |
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Underground mining |
|
|
|
|
|
|
|
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Ore mined |
kt |
621 |
|
312 |
581 |
737 |
505 |
|
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Mined grade |
g/t |
9.7 |
|
8.4 |
8.9 |
7.9 |
9.3 |
|
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Processing |
|
|
|
|
|
|
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Mill tonnes |
kt |
935 |
|
417 |
883 |
1,066 |
1,315 |
|
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Mill head grade |
g/t |
7.0 |
|
6.5 |
6.2 |
5.8 |
5.3 |
|
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Yield |
g/t |
6.5 |
|
5.9 |
5.8 |
5.6 |
4.8 |
|
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Plant recovery factor |
% |
94.0 |
|
93.7 |
93.4 |
92.6 |
92.9 |
|
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Gold produced |
|
|
|
|
|
|
|
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Milling |
koz |
194 |
|
80 |
165 |
192 |
204 |
|
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Heap leach |
koz |
N/A |
|
N/A |
N/A |
N/A |
N/A |
|
| |
Total gold produced |
koz |
194 |
|
80 |
165 |
192 |
204 |
|
| |
kg |
6,035 |
|
2,258 |
4,685 |
5,253 |
5,873 |
|
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Gold sold |
oz |
194 |
|
80 |
165 |
192 |
204 |
|
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Financials |
|
|
|
|
|
|
|
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Operating cost |
A$/oz |
692 |
|
680 |
614 |
526 |
452 |
|
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Total cash cost |
A$/oz |
675 |
|
662 |
611 |
541 |
496 |
|
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US$/oz |
696 |
|
621 |
539 |
401 |
445 |
|
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Capital expenditure |
A$ million |
71.8 |
|
26.6 |
62.6 |
41.6 |
37.0 |
|
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Notional cash expenditure(NCE) |
A$/oz |
1,062 |
|
1,013 |
992 |
743 |
632 |
|
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US$/oz |
1,096 |
|
951 |
875 |
550 |
567 |
|
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General |
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|
|
|
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Employees (TEC) |
number |
440 |
|
364 |
375 |
343 |
314 |
|
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Mineral Reserves |
Mt |
7.1 |
|
6.9 |
6.7 |
2.9 |
2.5 |
|
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Mineral Reserve Head Grade |
g/t |
5.7 |
|
6.0 |
5.7 |
7.7 |
7.7 |
|
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Mineral Reserves |
Moz |
1.3 |
|
1.3 |
1.2 |
0.7 |
0.6 |
|
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Expected Life of Mine |
years |
7 |
|
7 |
7 |
4 |
3 |
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| 1 |
Figures shown represent the six months to 31 December 2010. Rounding off of figures presented in this report may result in minor computational discrepancies. Where this
occurs it is not deemed significant. |
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