World Trade Center

2 Pages

When the original twin towers of the World Trade Center rose above the New York City skyline in the late 1960s and early 70s, they made history not only for their height, but also for their construction materials. They were the first ultra high-rise buildings designed without any masonry and instead used a gypsum shaft wall system invented by USG Corporation. Four decades later, and 10 years after that tragic September 11 day when the towe

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World Trade Center

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