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Anaconda smelter, Montana. Anaconda Copper Mining Company. Poling in the refining furnace. Wooden poles are plunged into the molten copper; there is a great evolution of gases when this is done and the excess oxygen combines with the carbon of the wood and passes off as carbon monixide. This refinin
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Credit lineAnaconda smelter, Montana. Anaconda Copper Mining Company. Poling in the refining furnace. Wooden poles are plunged into the molten copper; there is a great evolution of gases when this is done and th. 1942-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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