Pure Copper Sheets from Phelps Dodge El Paso Circa 1900

Sheets of pure copper produced by the Phelps Dodge refining company in El Paso, Texas, are visible in this vintage image. In the late 19th century, the company utilized electrolysis in large tanks to refine copper. The melted copper was then cast into ingots, a crucial step in the metals preparation for industrial applications. Circa 1900.

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