Dr Jones' lab tests on WTC wreckage proved that 1,000s of Thermate stealth incendiary firebombs were used to melt then cut the WTC steel in controlled demolitions. Here's video showing exactly how to install the diagonal cutter charges on steel columns during an explosive demolition.
This video details how to install diagonal RDX and/or Thermate "cutter" charges to destroy the World Trade Center. "Kicker" charges of dynomite are then used to push the steel columns sideways, in case the cutter charges did not make a perfect cut. Includes Larry Silverstein's confession on PBS TV that CIA HQ in WTC was "pulled" by explosive demolitions, as defined in Webster's Dictionary. By interpolation, WTC 1 & 2 must also have been prewired by our government with explosives and incendiary devices.