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Paul Revere's Copper Mill with Canton Viaduct in the foreground. Copper rolling is the process of converting large blocks of copper into thin sheets by rolling them gradually down to size. These sheets of copper were used in the 18th and 19th centuries mainly to plate the bottoms of ships.
The Blue Ledge Mine is an inactive underground copper mine that has been classified as a Superfund Site by the Environmental Protection Agency (EPA) due to high concentrations of heavy metals. The mine is located approximately 3 miles south of the California–Oregon border in the Rogue River-Siskiyou National Forest . [ 1 ]
2016 [2]; Rank Company Country Cu production (tonnes) 1: Codelco: Chile: 1,827,000 2: Freeport-McMoRan Copper & Gold: United States: 1,696,000 3: Glencore: Switzerland
Open pit copper-molybdenum ore, producing copper cathode, molybdenum concentrate, gold, silver, sulfuric acid 202 (2021) [3] 3 Safford: Graham County, Arizona: Freeport-McMoRan: Copper ore, leached 120 (2021) [2] 4 Sierrita: Pima County, Arizona
Pages in category "Copper mines in California" The following 3 pages are in this category, out of 3 total. This list may not reflect recent changes. B. Blue Ledge ...
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