Copper Production Process at Phelps Dodge El Paso 1930

Sheets of pure copper produced by the Phelps Dodge refining company stand in El Paso, Texas. In 1930, the company utilized electrolysis in large tanks to extract copper from ore. The image shows this copper being melted and cast into ingots, highlighting El Pasos role in the U.S. copper industry during the early 20th century.

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