MOTORWINCH DRUM ASSEMBLY FOR OXYGEN LANCE HOISTING RIG ON THE WEIGHING FLOOR OF THE FURNACE AISLE IN THE BOP SHOP LOOKING SOUTHEAST. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA Steel Corporation USX Corporation DorrOliver Company Pecor [furnace manufacturer] WilsonSnyder AllisChalmers American Air Filter Company NashHytor [pump manufacturer] Delaval [machinery manufacturer] Stupich, Martin, photographer

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