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Anaconda smelter, Montana. Anaconda Copper Mining Company. Grating through which particles of manganese concentrate fall and are broken up into smaller particles
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Credit lineAnaconda smelter, Montana. Anaconda Copper Mining Company. Grating through which particles of manganese concentrate fall and are broken up into smaller particles. 1942-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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