9/11 explosive evidence, page-340

NIST, yes have looked at their theories in the past and am not going to waste time again. Plenty of criticisms have been made of their shoddy work.

Here is one if you can be bothered to read it:
www.globalresearch.ca/911-cover-up-jet-fuel-caused-the-incendiary-explosions-in-the-wtc-lobby/5358433

Mind you there were reports from WTC staff of explosions in the basement below prior to either of the impacts above.