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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

Anaconda smelter, Montana. Anaconda Copper Mining Company. Part of the...

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description