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(GERMANY OUT) Lunch Atop a Skyscraper; Workers on the scaffolding of a New York skyscraper (Rockefeller-Centers ) during a lunch break - published in "Berliner Illustrirte" Nr. 42/1932 Picture taken by Charles Clyde Ebbets / Lewis W. Hine (Photo by Lewis W. Hine/ullstein bild via Getty Images), Chicago Pneumatic used in landmarks

1894년 이래 건설 산업에 종사


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