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Phelps Dodge refining company, El Paso, Texas. Starting a sheet of copper on the cathode
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Morenci, Arizona. Copper concentrating plant of the Phelps Dodge mining corporation where ore is processed
Morenci, Arizona. Loading copper ore from an open-pit mine into ore cars which transport the ore to the smelter plant at the Phelps Dodge mining corporation
Morenci, Arizona. Loading copper ore from an open-pit mine into ore cars which transport the ore to the smelter plant at the Phelps Dodge mining corporation