Diffuse flames burn cooler.
Oxygen-starved diffuse flames are cooler yet.

The fires in the towers were diffuse -- well below 800ºC.

Their dark smoke showed they were oxygen-starved
C4nn4Bliss Reviewed by C4nn4Bliss on . 100% Proof About 9/11 More Remains Discovered Near WTC Site 3/28/06 -"Fire Department crews had inspected the building in the months following the attacks, but construction workers clearing gravel off the rooftop found 10 bone fragments there last fall." -and it was a "fire" that caused them to collapse? bones shattered by ferocious flames and launched to the building's adjacent? No. What deformed humans, and launched bones was indeed explosives. Rating: 5