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What Were the Twin Towers? Jim O'Connor, Ted Hammond
Publisher: Penguin Young Readers Group

David Rockefeller presents a plan for a world trade center along the East River of Manhattan. The fires in the North Tower were considerably more extensive than than those in the South Tower. The above graphic from Chapter 1 of FEMA's Report shows the sizes of a 707 and a 767 relative to the footprint of a WTC tower. Construction of the World Trade Center Towers began on August 5 1966 and they were officially opened on April 4 1973. How Intense and Extensive Were the Twin Towers' Fires? At the World Trade Center, a super-strong lattice of exterior steel columns, placed less at a time, the twin towers were erected in huge prefabricated components. The Twin Towers were the centerpieces of the World Trade Center complex. At 110 stories each, 1 WTC (North Tower) and 2 WTC (South Tower) provided nearly 10-million-square feet of office space for about 35,000 people and 430 companies. FEMA's BPAT, who wrote the WTC Building Performance Study, were not given access to Ground Zero. The World Trade Center was more than its signature twin towers: it was a The twin towers were the first supertall buildings designed without any masonry. He stated that the attack on the World Trade Center would be merely the first of such attacks if his demands were not met. The Port of New York Authority is commissioned to study the plan. More than 400 of the dead were first responders, including New York City 11 terrorist attacks on the World Trade Center in New York.