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Revett Minerals, a Spokane-based company that operates a copper silver mine at Troy, MT, said that last year was the best in the company's history, thanks to its 200 employees. The Troy Mine announced record production and projects that copper and silver could be extracted from the site for at least the next seven years. In 2011, the mine processed 1.4 million tons of ore, made almost $30 million in net cash. The mine first opened in 1981 with an expected 15-year lifespan, but closed in 1993, until Revett reopened it in 2005.