If molten aluminium is heated further to a temperature of o C, it becomes just as liquid as water. I presume that this is what happened within the Twin Towers, and that the molten aluminium then began to run down into the floors below. All the water above the hot aircraft bodies must have turned to steam. If my theory is correct, tonnes of aluminium ran down through the towers, where the smelt came into contact with a few hundred litres of water.
From other disasters and experiments carried out by the aluminium industry, we know that reactions of this sort lead to violent explosions. Such reactions are particularly powerful when rust or other catalysts are present, which can raise the temperature to more than o C. Alcoa Aluminium carried out an experiment under controlled conditions, in which 20 kilos of aluminium smelt were allowed to react with 20 kilos of water, to which some rust was added.
The explosion destroyed the entire laboratory and left a crater 30 metres in diameter. Film taken of the buildings also showed explosions in the floor below the impacts. Given that the amount of aluminium involved was large in comparison with the quantity of water, and since rust was probably also present, I believe that it is highly likely that the building collapsed as a result of a series of extremely energy-rich aluminium-water explosions.
They were probably powerful enough to blow out an entire section of each building. The top section would than fall down on top of the sections that remained below, and the sheer weight of the top floors would be enough to crush the lower part of the building. When these materials and everything else fell some three or four hundred metres to the ground, they were squeezed between the upper and lower sections of the towers. This led to the neighbouring buildings being bombarded by hot particles, fuel and probably also aluminium droplets.
Both large and small clumps of particles have since been found embedded in the walls of these buildings. At any rate, the building caught fire, which got out of control.
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John Grigni, one of the illustrators who worked on the cards, spoke to Vice News in about some of the seemingly prophetic imagery. To join the conversation, please log in. Don't have an account?
Join the conversation, you are commenting as Logout. The scholars have collected eyewitness accounts of flashes and loud explosions immediately before the fall. The twin towers must, they say, have been brought down by explosives - hence the container of dust on Jones's desk, sent to him unsolicited by a woman living in lower Manhattan. He is using X-ray fluorescents to test it for explosive materials.
What's more, the nearby World Trade Centre 7 also collapsed later that afternoon. The building had not been hit by a plane, only damaged by fire. But Jonathan Barnett, professor of fire protection engineering at the Worcester Polytechnic Institute in Massachusetts, calls such claims "bad science". Barnett was a member of the World Trade Centre Building Performance Study, one of the government groups that investigated the towers' collapse.
Reluctantly, he has familiarised himself with the scholars' claims - many of them have emailed him. Yes, it is unusual for a steel structure to collapse from fire, Barnett agrees. However, his group and others argue that the planes' impact weakened the structures and stripped off the fireproofing materials. That caused the top floors of both towers to collapse on to the floors below. The collapse of WTC 7 was also unusual, he admits.
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