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Keywords from Image Description:
PHELPS DODGE CORP. SMELTER IN BACKGROUND NARA . Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Keyes Cornelius Cornelius Michael Photographer File PHELPSDODGECORP SMELTERINBACKGROUNDNARA tif NARA tif NARAcooperation PDUSGov Cochise County Arizona Smelting in Arizona Douglas