Public domain
Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Power for the wheels of defense industry. The power house which generates all the steam required in this plant. The heavy wires in the foreground carry current to the electric melting furnaces
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineSteel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Power for the wheels of defense industry. The power house which generates all the steam required in this plant.. 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.