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The Cliff Mine, the first great copper mine in the Western Hemi- sphere, opened in1845; it contributed advanced engines for hauling ore and miners out of the shafts, and for dewatering the mine. g As the population moved West, the discovery of copper deposits often succeeded disappoint- ing gold and silver claims.

mixture of copper ore, charcoal and iron ore to act as a flux. It was blown for several hours by foot or hand bellows. By the end of the smelt the copper had separated from the slag, which was tapped off. SOURCE Robert Raymond,Out of tfre Fjery Furnace (University Park, PA The Pennsylvania State University Press, 1986)

The General Mining Act of 1872 (sometimes referred to as the 'Hardrock' Act) provided for the free and open development of vast expanses of the western U.S. to any citizen hoping to cash in on the promise of gold, silver, copper, and other minerals. Because much of the foundation of U.S. mining law was predicated on the 'right to mine,' 32 of 50 states have been …

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