Reply #55: I suggest you research yourself.

[LARED]

In the basement of the WTC there was an enormous amount of different materials. Gypsum, wood, paper, just to name a few. Many of these substances will react with each other at high temperatures typically only seen in specific manufacturing process or a laboratory. There are manifold combinations possible, many that release abundant heat as a byproduct. This of course is all outside of what we would call the normal combustion process occurring. This issue is best answered by someone other than me. As an ME, I remember enough chemistry to not ask stupid questions.

But, I digress, the issue you keep skirting is the fact the the fires were underground raising the temperature of whatever was burning.

So do you have any sort of answer as to what caused the fires or the molten metals? Reality is staring you in the face. Step into the light.