Public domain
Aluminum casting. It's a delicate operation, this closing of the cope on a large sand mold. When the parts are locked together, the molten aluminum is poured into the mold. Aluminum Industries Inc., Cincinnati, Ohio
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Credit lineAluminum casting. It's a delicate operation, this closing of the cope on a large sand mold. When the parts are locked together, the molten aluminum is poured into the mold. Aluminum Industries Inc., C. 1942-01-01. Palmer, Alfred T., United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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