Public domain
Production. Copper. Rubber lining for large capacity centrifugal pumps are necessary for the pumping of copper sludge and concentrates at the mills of the Utah Copper Company at Magna and Arthur in Utah
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineProduction. Copper. Rubber lining for large capacity centrifugal pumps are necessary for the pumping of copper sludge and concentrates at the mills of the Utah Copper Company at Magna and Arthur in Ut. 1940-01-01. United States. Office Of War Information, Feininger, Andreas. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.