Lêer:Allegheny Ludlum steel furnace.jpgDescriptionAllegheny Ludlum steel furnace.jpg English: White-hot steel pours like water from a 35-ton electric furnace, Allegheny Ludlum Steel Corp., Brackenridge
Lêer:Allegheny Ludlum foundry ladle.jpgDescriptionAllegheny Ludlum foundry ladle.jpg Ladle of molten iron is poured into an open hearth furnace for conversion into steel, Allegheny Ludlum Steel Corp