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Bessemer interior
Rail mill and Bessemer exterior
Bessemer exterior
Bessemer interior
Bessemer interior
Bessemer and rail mill exterior
Bessemer and rail mill exterior
Charging Bessemer converter from crane-supported ladle
Teeming ladle, Edgar Thomson Works, Carnegie Steel Company (Braddock, Pa.)
Kelly converter, Cambria Iron Works (Johnstown, Pa.)
Fixing Bessemer converter bottom to shell (Pittsburgh, Pa.)
Straight-line pig-casting machine, Edgar Thomson Works, Carnegie Steel Company (Braddock, Pa.)
Illustration of first form of Bessemer converter with ladle
Portrait of Alexander Lyman Holley
Bessemer converter in full blast, The National Tube Works (McKeesport, Pa.)
Kelly's first tilting converter
Forming up steel pipe for welding
Bessemer converter in full blast, The National Tube Works (McKeesport, Pa.)
Drawing illustrating lap welding machine in action
Bessemer plant mixer being charged, Edgar Thomson Works, Carnegie Steel Company (Braddock, Pa.)
Two Bessemer converters in blow
Straightening rolls in which steel pipe is straightened and smoothed
Bessemer steel converter, Homestead Works
Henry C. Walton diary, 1872-1880

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