Anyone know how hot a forge gets with a mere propane source and some insulation? Definitly hot enough to melt steel, easily.These guys were trying to compare fire in building minus jet fuel and make this comparison. Do people think what would happen to the ground floor of the WTC buildings when such a side force or impact happens near the top? Think about it! As for the other explosions, what about all the internal transformers and fuel tanks. As the building is collapsing, wouldn't it act like a plunger, transfering pressures to lower floor as the top is coming down? Don't these hot gasses need to escape? Looks like explosion yes, but seems to me these pressures need to vent somewhere. no?
On a side note, most planes that crash are trying to be landed safely with a controlled decent. These planes were crashed with engines at full throttle. The only time you see this type of evidence in a crash is when a plane runs into the side of a mountain at full speed. The planes totally desentigrate and practically disappear. So no, it's not what most people expect with a crash because this is not usually how it happens. That hole in the ground in Pa looked about the same size as the hole in the pentagon. Just think of the video of the fighter test plane running into the concrete reiforced wall. Where did it go? dissapeared didn't it. Becuase it was flying at full speed, boom gone! You can take those enitire planes and compact them down into the size of small bus at the speeds they crashed at. Add the affect of full engine speed, rapid drop from high altitude, and you have a flying missile. I'm sure most people were not use to hearing planes fly at these speeds, as most never hit the speeds these planes were flying at. So I would think they would sound different as well. Just tsome things to ponder.