Western Mont. silver mine lifespan extended

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KALISPELL, Mont. (AP) -- An official with Revett Minerals Inc. says the Troy Mine in western Montana has enough copper and silver to keep the site producing for at least seven years and maybe longer.

Company President John Shanahan tells the Flathead Beacon (http://bit.ly/xGbxAp) that higher mineral prices have made it profitable to mine abundant lower grade ore.

The Spokane, Wash.-based company reports that last year it processed 1.4 million tons of ore at the mine and made almost $30 million.

The mine first opened in 1981, was closed in 1993, and then reopened in 2005.

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Information from: Flathead Beacon, http://www.flatheadbeacon.com