Public domain
Phelps Dodge refining company, El Paso Texas. Copper is recovered from smoke that pours into these pipes from the furnaces of the refining plant
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Credit linePhelps Dodge refining company, El Paso Texas. Copper is recovered from smoke that pours into these pipes from the furnaces of the refining plant. 1942-01-01. Henle, Fritz. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.