Why don't you take a look at this list of military experts, pilots, architects and engineers and see if you'd consider them "9/11 loons" also? http://www.patriotsquestion911.com/
Who says it disappeared? I think you need to read up on how they looked at the evidence and what they tested it for. WPI was the official place they analyzed the evidence and they came up with sulphur on beams and holes the size of quarters and could not explain it because they did not test for explosives (understand that last statement?) THEY DID NOT TEST FOR EXPLOSIVES. If one is not looking for something they will not find it.
Rawnoc: so you didn't notice the explosive residue that covered lower Manhattan for weeks? And you call others a looney? Did you notice the molten metal at ground zero for months? Yeah, your IHub's forensic expert, all right.
maybe you just have too much time on your hands so you come around here just to stir up trouble... here ya go.. keep you out of trouble this summer.. ;)