Public domain
Production. Copper (refining). Sheets of copper produced by electrolysis at a large refining operation. These will be melted and cast into ingots. Large amounts of copper are produced for the war effort at the El Paso, Texas plant of Phelps-Dodge Refining Company
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Credit lineProduction. Copper (refining). Sheets of copper produced by electrolysis at a large refining operation. These will be melted and cast into ingots. Large amounts of copper are produced for the war effo. 1942-01-01. Henle, Fritz, United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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