Copper Melting and Casting at Phelps Dodge 20th Century

Sheets of pure copper melt and are cast into ingots at the Phelps Dodge Refining Company in El Paso, Texas. In the early 20th century, the company utilized electrolysis for copper refining, revolutionizing metallurgy. This process significantly advanced mining techniques and underscored the importance of copper production to Texass economy. The image dates to the 1920s.

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