VARIOUS FACTS
Facts About The Attacks On World Trade Center WTC On September 11th, 2001
Compiled by USA Today
The youngest passenger on the hijacked jets was Christine Hanson on United Airlines Flight 175. She was 2 and on her first trip to Disneyland.
The oldest passenger on the hijacked jets was Robert Norton on American Airlines Flight 11. He was 82.
The New York City Fire Department lost 343 firefighters, almost half the number of on-duty deaths in the department's 100-year history.
The south tower collapsed at a magnitude of 2.1 on a seismograph; the north tower collapsed with a magnitude of 2.3, according to Columbia University in New York.
91 baseball games were postponed in the six days Major League Baseball suspended play, the longest postponement, excluding work stoppages, for regular-season games since World War I in 1918.
Sirius, one of the first bomb-sniffing K-9 dogs stationed near the World Trade Center after the 1993 terrorist bombing, died in the Sept. 11 attacks.
Fifteen million square feet of office space was lost at the WTC, more than three times the amount of space at the Sears Tower in Chicago. 1,430 people with 50,000 employees from 26 countries called the WTC "the office."
1,337 vehicles were crushed when the towers collapsed, including 91 FDNY vehicles - a little more than half of all the fire vehicles in Louisville.
1.5 million working hours during 261 days were spent removing the debris at the WTC site.
Seven in 10 Americans say they have experienced depression since the attacks. New York State Office of Mental Health estimates more than 33,000 showed symptoms of post-traumatic stress disorder.
America's Blood Centers, a network of community banks, collected 251,370 units, nearly three times the normal intake, in the four days after Sept. 11. The Red Cross collected more than 200,000 units and saw its on-hand supply nearly double, from 80,000 units to 156,000 units in days.
The fires at Ground Zero burned for 99 days, until Dec. 19.
(Sources: USATODAY research by April Umminger, Joan Murphy, Lori Joseph, William Risser, Darryl Haralson, Mary Cadden)
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The initial numbers are indelible: 8:46 a.m. and 9:02 a.m. Time the burning towers stood: 56 minutes and 102 minutes. Time they took to fall: 12 seconds. From there, they ripple out.
(source NYMAG.com)
WORLD TRADE CENTER
Facts About The Twin Towers
Each of the WTC towers had 110 stories. Tower One (the North Tower, which featured a massive 360 foot high TV antenna added in 1978) stood 1,368 feet (417 m) high, and Tower Two (the South Tower, which contained the observation deck) was 1,362 feet (415 m) high. The length and breadth of the towers were 208 feet (63.4 m) x 208 feet (63.4 m). Although only Tower 1 featured an antenna, the structure of both buildings were designed to carry a broadcast mast.
Of the 110 stories, eight were set aside for technical services (mechanical floors), in four two-floor areas evenly spread up the building. All the remaining floors were free for open-plan offices. Each tower had 3.8 million square feet (350,000 mª) of office space.
The complex, located in the heart of New York City's downtown financial district, contained 13.4 million square feet (1.24 million mª) of office space, almost four percent of Manhattan's entire office inventory. During the 1990s some 500 companies, especially financial firms, had offices in the complex, including Morgan Stanley, Aon Corporation, Salomon Brothers, and the Port Authority itself.
Each floor of the Twin Towers was approximately one acre in size.
When the Towers collapsed they fell nearly ¼ of a mile to earth, and reached a speed of 120 miles per hour.
IMPACT OF THE AIRLINERS
The Force Of The Impact On The Twin Towers
The towers were struck by hijacked Boeing 767 jet planes, American Airlines Flight 11 and United Airlines Flight 175.
A typical Boeing 767 is 180 feet (55 m) long and has a wingspan of 156 feet (48 m), with a capacity of up to 24,000 US gallons (91,000 l) of jet fuel.
The planes hit the towers at very high speeds. Flight 11 was traveling roughly 490 mph (790 km/h) when it crashed into the 1 WTC, the north tower; flight 175 hit 2 WTC, the south tower, at about 590 mph (950 km/h).
The resulting explosions in each tower ignited 10,000 gallons (c. 40,000 l) of jet fuel and immediately spread the fire to several different floors while consuming paper, furniture, carpeting, computers, books, walls, framing and other items in all the affected floors.
The jet fuel probably burned out in less than 10 minutes; the contents of the buildings burned over the next hour or hour and a half, according to the lead investigator of the NIST investigation.
(Sources: USATODAY research by April Umminger, Joan Murphy, Lori Joseph, William Risser, Darryl Haralson, Mary Cadden)