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Stacks of an Open Hearth
Steel plant under construction at Sparrows Point
Lukens Steel Company open hearth plants
Open Hearth - #1 Plant
Lukens Steel Co., Coatesville, Pa.
Steel production at Sparrows Point steel plant
Good Steel - a Lukens Tradition
Steel production at Sparrows Point steel plant
Steel production at Sparrows Point steel plant
Steel production at Sparrows Point steel plant
Open hearth casting pit, Bethlehem Steel Company (Bethlehem, Pa.)
Teeming ingots at an open hearth plant
Open hearth furnace tap in progress
Open hearth dolomite machine
Hot metal mixers ready to receive molten iron
Open hearth charging machine, Indiana Harbor Works, Inland Steel Company (East Chicago, Ind.)
Open hearth furnace forced draft
Electric beam punching machine, Pencoyd Iron Works (Pencoyd, Pa.)
Open hearth furnace tap in progress
Riveting up a section for a bridge, Pencoyd Iron Works (Pencoyd, Pa.)
Open hearth furnace's regulating and crossover valves, Bethlehem Steel Company (Bethlehem, Pa.)
Steel: research and development. Design model of furnace, Republic Steel Corporation (Cleveland , Ohio)
Manufacture of structural steel by open hearth process, Pencoyd Iron Works (Pencoyd, Pa.)
Open hearth explosive charge or torpedo, Indiana Harbor Works, Inland Steel Company (East Chicago, Ind.)
A pair of large electric gantry drilling machines, each carrying eight drills of five-foot radius

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