Brazil's Companhia Vale do Rio Doce (nyse: RIO - news - people ), which mines iron ore, nickel and copper, among other things, has risen seventeenfold since 2003.

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As for individual stocks, there are very few pure platinum plays, as the ore it is mined from also contains nickel and copper.

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While it is also a major producer of nickel, copper and fertilizers, about 90% of its profits come from iron ore.

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