Explosions caused by jet fuel and water sprinklers brought down Twin Towers on 9/11, scientists say



A team of Norwegian scientists claimed that an explosive chemical reaction may have been responsible for collapse of the Twin Towers on 9/11.



They said molten aluminium from the aircraft flown by the terrorists combined with water from fire sprinklers and caused a powerful explosion.



Explanation? A team of Swedish scientists are providing a new theory into what caused the World Trade Center towers to collapse on 9/11

The 9/11 Commission - the official probe into the outrage - concluded that the Twin Towers fell on September 11, 2001 because the planes flown by terrorists caused 'Total Progressive Collapse' in both.

While the Norwegians do not dispute that general picture, they do say it does not explain the whole story.



That another theory could emerge a decade after 9/11 will stoke the many conspiracy theories around the collapse of the World Trade Center.



Over the years some have suggested it was the work of the Bush administration to justify the invasion of Iraq or even to allow traders to make a fortune by betting against the stock market.

Christian Simensen of the Norwegian Research Institute SINTEF, however, said that the terrorists' planes were to blame.

His theory, presented at a technology conference in San Diego, is that when the planes went into the towers, they were trapped between floors which created a kiln-like effect.



This would have quickly pushed temperatures well past the melting point of their aluminium shell.

Collapse: Christian Simensen's team suggests that when the planes hit the towers, they were trapped between floors and pushed temperatures far beyond the melting point of their aluminium shell

The melted aluminium would have run down to the lower floors where it mixed with water and caused temperatures to spike to 2,700 degrees and fire off explosive hydrogen.

These hydrogen blasts would have been enough to blow out sections of the building whilst the high temperatures would have weakened the steel supports.

EXPLAINING THE THEORY Just before the Twin Towers collapsed on 9/11, loud explosions were heard inside, leading conspiracy theorists to believe they were caused by explosives.

But according to Christian Simensen of the Norwegian Research Institute SINTEF, these were actually the result of a chemical reaction which caused both buildings to come down.

His theory is that the aluminium used to make the aeroplanes flown by the terrorists melted in the 2,700f heat and dripped down through the building where it mixed with the hundreds of litres of water from the sprinklers.

The combination of the two caused a chemical reaction similar to dynamite which was strong enough to destroy chunks of the building.

Combined with the ferocious heat, this would have been enough to collapse both buildings.

The explosions heard by witnesses were the explosive hydrogen being fired off by the reaction of the liquid aluminium and water, nothing more.



Simensen said this was consistent with the official explanation of ‘Total Progressive Collapse’ in which the top floors of a Twin Towers fell in on themselves and put so much pressure on the floors below them that they collapsed too.



The bottom floors then hit the ground first, followed by the upper floors on top of them.



Simensen was unable, however, to shed any more light on what happened to the neighbouring 7 World Trade Center building that later on September 11, despite not being hit by a hijacked aeroplane.



The official version was that it was simply due to fire but 'Truthers' claim that no other steel building in history has ever fallen due to a blaze alone.



According to a recent piece in New York magazine: 'In the truth-movement canon, "Building 7" has assumed the Jack Ruby–Lee Harvey Oswald position in the overall 9/11 conspiracy claiming the entire episode was "an inside job," planned and carried out by individuals connected to the Bush agenda.



'Anthropomorphically speaking, Building 7 simply knew too much.'



Some 2,995 people including 67 Britons were killed when terrorists flew passenger jets into the Twin Towers on September 11, 2001.



A ceremony marking the 10th anniversary took place earlier this month, as well as the official opening of the 9/11 Memorial in Lower Manhattan.