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Phelps Dodge refining company, El Paso, Texas. Smeltered copper being put on conveyors
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Phelps Dodge refining company, El Paso, Texas. Sheets of copper being prepared for the electrolysis tanks
Phelps Dodge refining company, El Paso, Texas. Sheets of copper being prepared for the electrolysis tanks
Phelps Dodge refining company, El Paso, Texas. Sheets of copper being prepared for the electrolysis tanks