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Phelps Dodge refining company, El Paso, Texas. Sheets of copper being prepared for the electrolysis tanks
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Phelps Dodge refining company, El Paso, Texas. Shearing sheets of copper
El Paso, Texas. Phelps Dodge refining company. Sheared sheets of copper
El Paso, Texas. Phelps Dodge refining company. Sheared sheets of copper