Public domain
Steel manufacture, Allegheny-Ludlum. These newly cast steel gear blanks will be used in new machinery for the refining and manufacturing of iron and steel. High quality alloys are needed for the machinery to produce steel
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineSteel manufacture, Allegheny-Ludlum. These newly cast steel gear blanks will be used in new machinery for the refining and manufacturing of iron and steel. High quality alloys are needed for the machi. 1940-01-01. United States. Office For Emergency Management, Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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