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Phelps Dodge refining company, El Paso, Texas. Sheets of copper on conveyors
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Phelps Dodge refining company, El Paso, Texas. Copper is recovered from smoke that pours into these pipes from the furnaces of the refining plant
Phelps Dodge refining company, El Paso, Texas. Copper is recovered from smoke that pours into these pipes from the furnaces of the refining plant
Phelps Dodge refining company, El Paso, Texas. Copper is recovered from smoke that pours into these pipes from the furnaces of the refining plant