Public domain
Production. Copper. Copper ore travelling on belt conveyors at one of the large copper concentrators of the Utah Copper Company. The Utah Copper Company iron detectors straddling the conveyors automatically stop the operation when tramp iron is detected in the ore
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Credit lineProduction. Copper. Copper ore travelling on belt conveyors at one of the large copper concentrators of the Utah Copper Company. The Utah Copper Company iron detectors straddling the conveyors automat. 1940-01-01. United States. Office Of War Information, Feininger, Andreas. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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