Public domain
Ladle of molten iron is poured into an open hearth furnace for conversion into steel, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. Note the safety latch on the crane hook
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Credit lineLadle of molten iron is poured into an open hearth furnace for conversion into steel, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. Note the safety latch on the crane hook. 1939-01-01. Palmer, Alfred T.. FSA/OWI Color Photographs, Library of Congress. Public domain.