9/11: 'Twin Towers didn't collapse due to fire,' say conspiracy theorists
New York: On September 11, 2001, 2,996 people were killed during one of the deadliest attacks in American history.
The timeline of the 9/11 series of collapse of the World Trade Centre (WTC) buildings is as follows:
8:45 AM: a hijacked American passenger--Boeing 767 crashed into the north tower of the WTC in New York.
The aircraft loaded with 20,000 gallons of jet fuel struck near the 80th floor of the 110- storey skyscraper.
8:59 AM: a second Boeing 767-- United Airlines flight hit near the 60th floor of the south tower.
9:59 AM: The south tower collapsed before the north tower within 10 seconds.
10:28 AM: The north tower collapsed to the ground.
However, a third tower, Tower Seven (WTC7) has been subject to many conspiracy theories as it fell to the ground without actually being hit by a plane.
The 47- storey third tower, located 110 m away from WTC fell to the ground seven hours after the Twin Towers.
Government officials in 2008 stated that the building fell due to "uncontrolled building fires". However, researchers have dismissed these findings, Express UK reported.
An extensive 4-year-study done by professors at the university of Alaska using four very complex computer models suggests that the "fire did no cause the collapse."
The primary conclusion from their report states that fire did not cause the collapse of WTC 7 on 9/11, contrary to the conclusions of National Institute of standards and technology (NIST) and private engineering firms that studied the collapse.