Originally Posted by engorgecash

Thermal hot spots with temperatures in excess of 700°C existed deep within the wreckage of the buildings. The temperature at the core of "the pile," was near 2000 degrees Fahrenheit, according to fire officials, who add that the fires are too deep for firefighters to get to.

So why was the temperature at the core of "the pile" nearly 500° F hotter than the maximum burning temperature of jet fuel a full seven days after the collapses? There were no infernos in either of the twin towers before they collapsed, so what caused the hot spots deep in their wreckage?

The answer is in the video. Thermite.