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Manufacture of structural steel by open hearth process, Pencoyd Iron Works (Pencoyd, Pa.)
Open hearth charging machine
Iron shell open top blast furnaces with charging elevator
Loading finished steel into a railroad car for shipping
Detail of blast furnaces converted to tramway carrier system, Cambria Iron Works (Johnstown, Pa.)
Steel-works, Bethlehem Steel Corporation (Steelton, Pa.)
Open hearth furnace forced draft
Open hearth dolomite machine
Charging floor of open hearth furnace
Open hearth furnace back wall construction
Open hearth plant under construction, Kaiser Steel Company (Fontana, Calif.)
Panorama of Pencoyd Iron Works (Pencoyd, Pa.)
Lackawanna Plant, Bethlehem Steel Company (Lackawanna, N.Y.)
Charging a furnace with scrap World War II helmets, San Francisco Plant, Bethlehem Pacific Coast Steel Corporation
Open top furnace with open charging hopper bell
Ingot mold with brick-lined metal hot tops
Manufacture of structural steel by open hearth process, Pencoyd Iron Works (Pencoyd, Pa.)
Franklin Iron Works, Bethlehem Steel Corporation (Johnstown, Pa.)
Panorama of Pencoyd Iron Works (Pencoyd, Pa.)
Open hearth furnace back wall
Iron shell open top blast furnaces with charging elevator
Cambria Iron Works and Pennsylvania Railway, Lower Works, Cambria Iron Works (Johnstown, Pa.)
Row of open hearth furnaces, Gary Steel Works (Gary, Ind.)
Open hearth furnace's regulating and crossover valves, Bethlehem Steel Company (Bethlehem, Pa.)
Charging platform at open-top blast furnace

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