Molten Copper Poured at Phelps Dodge Refining 1920

Molten copper is poured from a refining furnace at the Phelps Dodge Refining Company in El Paso, Texas, in 1920. The refining process involved running the copper through a bed of coke to prevent oxidation prior to casting into molds. This technique was essential for producing high-quality copper, a critical material for electrical applications.

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