The samples were taken from the rubble, not from dust particles in the air.
That video doesnt show EXACTLY why the building collpsed Rik. It gives an opinion as to why the buildings collapsed. What it doesnt explain is why molten metal was video'd pouring out of the WTC just before it fell. What it doesnt explain is why big pools of molten metal were found in the basements, still molten, 8 weeks after the event. Molten Rik, not softened.
Are you ignoring WT7 Rik?
Its all well and good thinking you can say how the WTC went down. But WT7 is a bit of problem for that theory isnt it mate. Which is why it was ignored in the 9/11 reports.
Why was it reported to have collapsed 20 minutes before it did Rik?
I did ask you this last time, but you seem to have missed that question, so its here again for you.
WTC7 puts the brakes on what your saying because you cant explain this. Its not going to go away if you ignore it. No ones going to buy the theory of the WTC collapse through fire, when this point gets ignored. Everyone who says the WTC went down through fire, never mention WTC7, WHY? i'll tell you why, because it puts serious doubt on that explanation.