Public domain
Aluminum casting. Uncle Sam's soldiers on the production lines of defense pour a large magnesium casting. The molten alloy enters the runner box first. Magnesium is one of the most valuable metals for war production. Exact purpose of this casting is kept secret. Aluminum Industries Inc., Cincinnati,
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Credit lineAluminum casting. Uncle Sam's soldiers on the production lines of defense pour a large magnesium casting. The molten alloy enters the runner box first. Magnesium is one of the most valuable metals for. 1942-01-01. United States. Office Of War Information, Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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