Pittsburgh Area Steel Mills
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127 Total Pictures
Dorothy 6 & Pool, Duquesne Works 3-88 LF
Ore Pit Duquesne Works 9-89 SF676-27
Cranes and Dorothy Furnaces, Duquesne Works 9-89 LF
National Works, McKeesport 10-88 SF570-26
National Works 10-88
Blast Furnace, National Works, McKeesport 2-89 LF
Blast Furnaces, National Works, McKeesport 2-89 LF
National Works and the Monongahela River 10-88
National Works Stacks 10-88
Section of the National Works 10-88
