Public domain
Shipbuilding (Norfolk Navy Yard). The push for the navy is supplied by huge propellers such as these. This four-bladed monster, cast in one place, is being inspected before it is installed on a warship
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Credit lineShipbuilding (Norfolk Navy Yard). The push for the navy is supplied by huge propellers such as these. This four-bladed monster, cast in one place, is being inspected before it is installed on a warshi. 1941-01-01. Palmer, Alfred T., United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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