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American Experience
Safety Precautions
Before they could sign off on the design for the World Trade Center, engineer Leslie Robertson and his team had to consider all possible events that might take place in a high rise building. One of these possibilities was that of an airplane impact—there had been two incidences of aircraft impact on New York City skyscrapers at that time.
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A look at the US vice presidency, from constitutional afterthought to position of political import.
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