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El Paso, Texas. Phelps-Dodge copper refining plant
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Phelps Dodge refining company, El Paso Texas. Interior of the plant showing stacks of wire bars
El Paso, Texas, Phelps Dodge refining company. Electrolytic tanks in which sheets of pure copper are formed. The sheets are later melted and cast into ingots
El Paso, Texas, Phelps Dodge refining company. Electrolytic tanks in which sheets of pure copper are formed. The sheets are later melted and cast into ingots