Tuesday, June 2, 2009

Gold and silver

Gold and silver are produced primarily as by products of Rio Tinto's copper operations, often extracted as impurities in the final stage of refining copper.

Rio Tinto's gold and silver interests are located at Kennecott Minerals and Kennecott Utah Copper in the USA, and at our joint ventures at Escondida (Chile), Grasberg (Indonesia) and Northparkes (Australia).

Kennecott Utah Copper produces about 400,000 troy ounces of gold per year, with a purity of 99.99 per cent and three million troy ounces of silver per year, with a purity of 99.9 per cent.

1. Barneys Canyon, North America (Gold)
2. Bingham Canyon, North America (Gold and silver)
3. Cortez/Pipeline, North America (Gold)
4. Escondida, South America (Gold and silver)
5. Grasberg, Indonesia (Gold and silver)
6. Greens Creek, North America (Gold and silver)
7. Northparkes, Australia (Gold)
8. Rawhide, North America (Gold)

For more information about the Rio Tinto's gold and silver operations, visit Our operations.

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