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Lunch Atop A Skyscraper: The Story Behind The 1932 Photo | 100 Photos | TIME

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Philippe Petit on his Twin Towers walk, 50 years later

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Construction du Rockefeller Center de New-York (1932)

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Old videos from 1900 Construction

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Ironworkers from Newfoundland : Walking Iron (1986) - The Fifth Estate

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CN Tower, Construction Documentary The World's Tallest, 1975-2007 To The Top

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In Memory of Caleb Spain - Union Ironworker