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Production. Copper (refining). Copper is recovered from smoke that pours into these pipes from the furnaces of a large refining operation. Large amounts of copper are produced for the war effort at the El Paso, Texas plant of Phelps-Dodge Refining Company. Sourced from the Library of Congress.
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Production. Copper (refining). Copper is recovered from smoke that pours into these pipes from the furnaces of a large refining operation. Large amounts of copper are produced for the war effort at the El Paso, Texas plant of Phelps-Dodge Refining Company. Sourced from the Library of Congress.

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Production. Copper (refining). Copper is recovered from smoke that pours into these pipes from the furnaces of a large refining operation. Large amounts of copper are produced for the war effort at the El Paso, Texas plant of Phelps-Dodge Refining Company. Sourced from the Library of Congress.

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