1930s
An ironworker at the edge of a floor
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Setting a beam high above a tower top
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The suspension bridges over the East River
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A welder at work in a shower of sparks
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Cross-bracing between the legs of a tower
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A patrol boat under way on the bay
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The catwalks hang between the two towers
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Traffic on the George Washington Bridge
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The bridge beyond a grid of bars
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Derricks on the steel frame of a building
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Workers fit a heavy fitting on the cable
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The first column stubs on their footings
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Beams laid out on the steel deck
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Diagram: on June 23rd the 25th floor is reached
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Diagram: structural steel reaches the 50th story
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Ironworkers steady a column with tag lines
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The finished tower in the skyline
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A worker at a handwheel beside a steel box
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A high scaler hangs on the rock face
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The catwalk climbs toward a tower
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A signalman at a control lever high above the city
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A derrick swings steel beside the safety net
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Helmeted workers crowd around the compacting machine
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A raising gang receives a beam
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