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Feature Hard Rock Gold Mining Seven Mines alumni work Colorado's only active underground gold mine, which is situated only a stone's throw from one of the first Rocky Mountain gold strik...

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Since the costs can be high in the exploration and removal of gold from the hard rock mines, large companies are created in order to raise the money necessary for the development of the mines, rather than the solitary individual or small group associated with placer mining...

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Colorado School of Mines Magazine

Feature Hard Rock Gold Mining Seven Mines alumni work Colorado's only active underground gold mine, which is situated only a stone's throw from one of the first Rocky Mountain gold strik...

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Gold mining - Wikipedia

Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds...

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Colorado School of Mines Magazine

Feature Hard Rock Gold Mining Seven Mines alumni work Colorado's only active underground gold mine, which is situated only a stone's throw from one of the first Rocky Mountain gold strik...

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