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'A Dentist Works in a New Guinea Jungle'
Gray's aero-view map of the Panama Canal
Open hearth casting pit, Bethlehem Steel Company (Bethlehem, Pa.)
Barbed wire machine in operation (Donora, Pa.)
Billet heating furnace feeding the roughing mills, Donora Works, American Steel and Wire Company (Donora, Pa.)
Hollow forging a gun tube, Bethlehem Steel Company (Bethlehem, Pa.)
Steel Wire and Nail Making, Donora Works, American Steel and Wire Company (Donora, Pa.)
Teeming ladle, Edgar Thomson Works, Carnegie Steel Company (Braddock, Pa.)
Lifting heated ingot from soaking pit, Edgar Thomson Works, Carnegie Steel Company (Braddock, Pa.)
Chain making: inserting the stud in heavy stud chain, American Chain Cable Works (Troy, N.Y.)
Circular pig caster machine, Bethlehem Steel Company (Bethlehem, Pa.)
Grinding down rough edges at the joints, Bethlehem Steel Company (Bethlehem, Pa.)
Wire nail making machine, Donora Works, American Steel and Wire Company (Donora, Pa.)
Sawing rough ends from a 'Louisiana' barbette plate, Bethlehem Steel Company (Bethlehem, Pa.)
Straight-line pig-casting machine, Edgar Thomson Works, Carnegie Steel Company (Braddock, Pa.)
Chain making: bringing scarfed ends of link together for welding, American Chain Cable Works (Troy, N.Y.)
Electric beam punching machine, Pencoyd Iron Works (Pencoyd, Pa.)
Bessemer converter in full blast, The National Tube Works (McKeesport, Pa.)
Rail mill intermediate stand and rolls, Edgar Thomson Works, Carnegie Steel Company (Braddock, Pa.)
Nail making machines (Donora, Pa.)
Blast furnace, Edgar Thomson Works, Carnegie Steel Company (Braddock, Pa.)
Casting an armor plate ingot bath, Bethlehem Steel Company (Bethlehem, Pa.)
Roughing mill in which billets are rolled, Donora Works, American Steel and Wire Company (Donora, Pa.)
Straightening an armor plate under a hydraulic press
Riveting up a section for a bridge, Pencoyd Iron Works (Pencoyd, Pa.)

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