When was the last piece of the Twin Towers removed?
Ultimately this beam became known as “The Last Column” and became a symbol of loss, remembrance and of the community at ground zero and was ceremoniously removed from the site on May 30, 2002, to mark the end of the recovery effort.
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It is estimated that some 200,000 tons of steel collapsed into the ground when the twin towers collapsed. According to an article in the journal Places, by spring of 2002 most of the structural steel had been transported to New Jersey. New York City sold about 175,000 tons of the scrap.
On Sept. 11, 2001, 343 firefighters and paramedics were killed, most when the towers collapsed. Now, an equal number have died from 9/11-related illnesses, the FDNY says.
The youngest flight passenger who died was Christine Hanson, a 2-year-old on her way to Disneyland on United Airlines Flight 175. The oldest was Robert Norton, 82, who was on American Airlines Flight 11. The 19 hijackers from the militant Islamic extremist group al-Qaeda also died.
Nineteen terrorists from al-Qaeda hijacked four commercial airplanes, deliberately crashing two of the planes into the upper floors of the North and South Towers of the World Trade Center complex and a third plane into the Pentagon in Arlington, Virginia.
Each of the Twin Towers had 110 floors. Each tower's footprint and floors were approximately an acre in size. On windy days, each tower could sway up to almost 12 inches side to side. There were 43,600 windows in the Twin Towers, equating to more than 600,000 square feet of glass.