Silver mining in Colorado
http://dbpedia.org/resource/Silver_mining_in_Colorado
Silver mining in Colorado has taken place since the 1860s. In the past, Colorado called itself the Silver State. (Nevada also calls itself the Silver State. Idaho, however, actually produces the most silver in the US.)
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Silver mining in Colorado
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Silver-mining centers in Colorado
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Silver mining in Colorado has taken place since the 1860s. In the past, Colorado called itself the Silver State. (Nevada also calls itself the Silver State. Idaho, however, actually produces the most silver in the US.)
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10026