Public domain
Production. Ship propellers, etc. Surface irregularities on the blades of manganese bronze ship propellers are chipped off with a pneumatic hammer in the machine shop of a large Eastern plant now engaged wholly in war Production. Baldwin Locomotive Works
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Credit lineProduction. Ship propellers, etc. Surface irregularities on the blades of manganese bronze ship propellers are chipped off with a pneumatic hammer in the machine shop of a large Eastern plant now enga. 1942-01-01. United States. Office Of War Information, Rittase, William M.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.