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Anaconda smelter, Montana. Anaconda Copper Mining Company. Part of the concentrating plant in which the ore is concentrated from about five percent to about twenty-six percent copper; from here the concentrate goes to the roasting furnaces
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Credit lineAnaconda smelter, Montana. Anaconda Copper Mining Company. Part of the concentrating plant in which the ore is concentrated from about five percent to about twenty-six percent copper; from here the co. 1942-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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