Public domain
Production. Copper. Large-size motors are required to drive the ball mills at the Magna and Arthur mills of the Utah Copper Company where vast quantities of copper ore are treated
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineProduction. Copper. Large-size motors are required to drive the ball mills at the Magna and Arthur mills of the Utah Copper Company where vast quantities of copper ore are treated. 1940-01-01. United States. Office Of War Information, Feininger, Andreas. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
Similar works
Untitled
Steel manufacture, Allegheny-Ludlum. To the left is a portion of the panels containing metering devices and to record the operations of generators such as this, which power a rolling mill
Butte, Montana. Anaconda Copper Mining Company. Huge motors are required for hoisting machines at copper mines
Production. Pratt and Whitney airplane engines. A new Pratt and Whitney airplane motor running on a test stand at a large Eastern plant. Before being shipped to one or another of our aircraft factories, the engine must demonstrate its ability to meet rigid Air Force requirements. Pratt and Whitney A
Untitled photo, possibly related to: Getting machinery ready for the grinding season, Bethlehem Sugar Mill, St. Croix Island, Virgin Islands
San Sebastian, Puerto Rico (vicinity). In a sugar mill near San Sebastian