Keywords: Ladle of molten iron is poured into an open hearth furnace for conversion into steel, Allegheny Ludlum Steele Corp, Brackenridge, Pa Note the safety latch on the crane hook.jpg LargeImage en Ladle of molten iron is poured into an open hearth furnace for conversion into steel Allegheny Ludlum Steele Corp Brackenridge Pa Note the safety latch on the crane hook LOC-image fsac 1a35060 Creator Alfred T Palmer ~ 1941 PD-USGov <gallery>File Allegheny Ludlum foundry ladle jpg</gallery> Open hearth furnaces Photographs by Alfred T Palmer Steel production Ladles metallurgy Allegheny Ludlum |