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American Experience
Construction of the World Trade Center
The foundations themselves presented the first challenge. They would have to descend through 70 ft. of water-logged landfill before reaching bedrock. The greatest challenge by far, however, lay in the engineering of the towers themselves. The solution, developed by the structural engineers John Skilling & Leslie Robertson in the mid-1960s, was to re-conceive the basic structure of tall buildings.
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A biography from American Experience's collection of presidential portraits.
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Part of the award-winning The Presidents collection.
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Part of the award-winning The Presidents collection.
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Follow LBJ from rural Texas to his ascendancy to the presidency after the assassination of JFK.
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Part of the award-winning The Presidents collection.
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Part of the award-winning The Presidents collection.