Gold and silver
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Rio Tinto's gold and silver are now produced mainly by Kennecott Minerals, Kennecott Utah Copper and its joint ventures Escondida in Chile, Grasberg in Indonesia and Northparkes in Australia.
The following table details production and commodity information for Rio Tinto's worldwide gold and silver operations:
| Operation | Rio Tinto share | Commodity | Total annual production, '000 ounces (as at December 31 2007) |
|---|---|---|---|
| Barneys Canyon, North America | 100.0% | Gold | 11 |
| Bingham Canyon, North America | 100.0% | Gold Silver |
397 3,487 |
| Cortez/Pipeline, North America | 40.0% | Gold | 538 |
| Escondida, South America | 30.0% | Gold Silver |
187 7,870 |
| Grasberg, Indonesia | 40.0% | Gold Silver |
2,689 5,238 |
| Greens Creek, North America | 70.3% | Gold Silver |
68 8,646 |
| Kennecott Utah Copper, North America | 100.0% | Gold (refined) Silver (refined) |
523 4,365 |
| Northparkes, Australia | 80.0% | Gold | 79 |
| Rawhide, North America | 51.0% | Gold | 19 |
| Rio Tinto share of total gold and silver production, '000 ounces (as at December 31 2007) | Gold Gold (refined) Silver Silver (refined) |
1,233 523 13,002 4,365 |