Reply #112: It is a really clever plan and one which demolition experts have

[whistle]

...studied and practiced and perfected over decades. Also, when the south tower <which collapsed first> buckled at approximately the 80th floor, the 30 floors above can be seen in all of the film clip closeup began to tip outward/sideways, then suddenly become consumed by an explosive cloud of dust and smoke, to end up exactly like the rest of the tower structure, in a heap, in small manageable pieces and debris pile at the foot print of the south tower. How did that happen? Perhaps an additional 37.5% can be added to that figure for a total of 11,000 pounds of explosives. That is a significant amount of explosives for any structure, but much closer to what experts say was sufficient when efficiently placed to bring down each WTC tower. Then there were also the seven sub-basement levels where explosions were heard and seen by witnesses and where the total integrity of the massive 47 structural steel columns could be affected by specially placed heat intensified explosives that could melt and cut thick steel columns. So another 1,000 to 2,000 pounds structural steel cutting explosives for each tower in the sub-basements could be added as well.

Check out the demolition company websites for further information on set-up and the latest in technology for controlled demolitions. The complicated control systems for sequencing demolition patterns is high state of the art and very doable. I believe also that back in September 2001, both WTC towers were only about 35% to 40% occupied by tenants, so the majority of rent-able space was in fact vacant at the time. Workers were coming and going all of the time as tenants came and went. A demolition crew of two to two and a half dozen workers could slip in and out with wires, boxes and equipment with the proper clearance forms and IDs virtually unnoticed.