This above mentioned paper, which is still in its 'prior to peer-review' stage, is one of the more sophisticated pieces of 'anti official theory' jewelry in the crown of the 9/11 truth.
I found this excerpt of the above, to be one of the more convincing arguments for a start :
Floor 97 contained about 33,603 cubic meters of air at the moment of collapse. That is a factor of almost 2.5 times the normal volume of air inside floor 97. This finding corroborates the work of another researcher who measured the entire cloud volume created by the WTC 1 collapse, not just of a single floor as I am doing. In his research he estimated the building cloud volume expanded over 3.4 times. Considering analysis of the entire building introduces more error than analyzing the first floor of collapse, his estimates are credible. It begs the question: Where is all this air volume coming from?
Let us pause for a moment. This is simply a phenomenal amount of air volume. To visualize, a floor of the WTC is about 1/3 of a city block. As one researcher put it, you don't need a wall of degrees to be an expert in common sense. Could a gravity collapse somehow explain this? Science says no way. There is no phenomenon in a natural gravity collapse that can account for this large volume of air. It is artificially produced. What phenomenon can produce this amount of air?
It may be argued that air pressure inside the building was higher because of fire. The WTC 1 generally had an open-floor plan. There was a large crash hole. Many windows were broken. This is like a big bag of air with holes in it. If pressure built up in the building where is it going to go? It will follow the path of least resistance and go out the holes. Substantial pressure would not be able to build up.
It may be argued that the additional air volume was created by the core collapsing first. Take two paper plates and push them together. There is only so much air between those plates, it doesn't mater if you push the plates in the middle. There has to be another force, such as intense heat to expand the air to the volume documented.
In my opinion the far most suited candidate for the form of planted explosives used in the demolition of WTC 2 , then WTC 1 and then hours later of WTC 7, are CIA-METC-Explosives, or in other words, thermobaric gaseous explosions.
When placed every three floors, there where the bolted connections were situated in all the perimeter columns, it would decimate this writer's calculated amounts of HMX or RDX high explosives by at least a factor of ten or more.
METC explosions do have a cumulative effect on each other, when detonated in a rapid timely sequence, and also have a strange effect inside square buildings.
The four corners will enhance the explosive force up to 2 or 3 times.
METC explosives can also be "shaped charged", as crazy as that sounds for a gaseous device. So they can slice core columns if that effect was wanted.
See my thread about thermobaric devices.
It has been moved around a bit, it should be placed in this specific 9/11 conspiracies forum, in my opinion.
