The explosive devices could have been encased in heat-resistant material so that any of them which were exposed to fire would not detonate. If timing was critical then they could be detonated by remote control (a radio or microwave signal) at the right time. Even if the fires disabled the bombs on the levels where the planes hit, they would not disable the bombs on the floors below the fires. No wires, CPUs or timing devices are needed, just some way for each explosive device to respond to the unique signal causing it to explode. Even a timing sequence may not have been needed - simultaneous detonation of each device in the above-ground levels may have been sufficient to produce the intended result.
Had the lower levels been damaged only by the impact of the upper floors falling, each of those lower 80 or so levels would have had to be destroyed successively, which would have taken considerably longer than ten seconds. The speed of the collapse is conclusive evidence that the Twin Towers were demolished by controlled explosions.
For a week after the collapse of the Twin Towers there were areas beneath the surface which remained intensely hot.
AVIRIS data collected on September 16, 2001, revealed a number of thermal hot spots in the region where the WTC buildings collapsed. Analysis of the data indicated temperatures greater than 800oF in these hot spots (some over 1300oF). - U. S. Geological Survey Report
What was the source of this heat? Could it have been residual heat from underground nuclear explosions?
The Twin Towers were not the only buildings in the WTC complex about which questions can be asked. There were other WTC building "collapses".
A way to prove that the supporting steel columns of the Twin Towers had been blasted by explosives would be to examine fragments from them among the debris for evidence of what metallurgists call "twinning". But the WTC debris was removed as fast as possible and no forensic examination of the debris was permitted by the FBI or any other government agency. Almost all the 300,000 tons of steel from the Twin Towers was sold to New York scrap dealers and exported to places like China and Korea as quickly as it could be loaded onto the ships, thereby removing the evidence. See Debris Mountain Starts to Shrink, an article which shows that Controlled Demolition Inc. (a world leader in the demolition of tall buildings) was apparently keen to have the debris removed and disposed of as soon as possible and was able to come up with a detailed plan for doing so within eleven days of the collapse of the Twin Towers, suggesting that this company had detailed knowledge of the Twin Towers and the entire WTC complex prior to September 11th.
It might be objected that the WTC employed hundreds of security guards and had hundreds of surveillance cameras (supposedly) operating. With this kind of security it might be possible to plant a few bombs but planting many (and especially bombs powerful enough to destroy the foundations of the supporting steel columns) would seem infeasible. However, the ownership of the World Trade Center changed hands eleven weeks before the attack. The new owner was Larry Silverstein. The destruction of the WTC and George W. Bush's declaration of a "War on Terrorism" has proven to be (and could have been foreseen to be) of major benefit to Israel in its brutal repression of the Palestinian people, its efforts to destroy the Palestinian Authority, which it labels as "terrorist-controlled", and its attempts to dominate all its Arab neighbors. The new owners of the WTC might well have been persuaded to cooperate in a scheme of such obvious benefit to Israel. But if eleven weeks is considered insufficient time to plant explosives then how about several years? This possibility will be considered in the next section.
6. Did the Twin Towers Collapse on Demand?
When considering the possibility that the Twin Towers were brought down by explosives there is an interesting variation which is worth considering: What if the Twin Towers were designed - or re- engineered - so that they could be destroyed in a controlled demolition if circumstances required?
What circumstances might lead to an order to demolish the Twin Towers? A situation in which it was believed that they were in danger of collapsing in an uncontrolled manner and falling onto the buildings surrounding them in Manhattan's financial district. In such a case, it might be held, better to demolish one or both of the towers in a controlled manner so as to minimize death and destruction in the surrounding area.
A self-destruct mechanism might not have been designed into the Twin Towers originally, but it might have been added later, especially after the 1993 bombing of the WTC alerted all of America (an in particular, the people working in the surrounding office buildings) to the possibility that there might be another attack on the WTC which would succeed in destroying the towers. It would not be particularly difficult to engineer this possibility. One simply has to engage the services of a controlled demolition company (such as Controlled Demolition Inc. to set things up. (This is the company that hauled away the rubble from the Murrah Building in Okalahoma City after its demolition and provided a detailed plan to do the same for the WTC eleven days after September 11th.) Naturally they would be told (if they wondered at the purpose) that this was a "fail-safe" mechanism, not intended to be used except to minimize damage in the event of an attack.
So such a company specializing in controlled demolition of large buildings could study the problem and, with the approval of the owners (the Port Authority of New York and New Jersey prior to July 2001), place explosives at just those points which would destroy the structural integrity of the building (if and when detonated) so as to bring the Twin Towers down precisely in the way the world witnessed on CNN on September 11th.
It has even been suggested that such a self-destruct mechanism was required in order to prevent companies with offices in the buildings in the vicinity of the Twin Towers from moving out (fearing for the safety of their premises and their employees), and was also required to persuade new companies to rent office space in Lower Manhattan. It has been suggested that the company directors of large companies with, or considering buying or renting, office space in the financial district would not agree to keep or to obtain that office space unless they could be given an assurance that in the event of a major attack on the WTC, sufficient to destroy the Twin Towers, their offices would not be damaged significantly and their employees would not be put in mortal danger. Whether this is true or not is known only by a few, including the past and present owners of the WTC (and some of their employees) and the directors of large companies with offices in Lower Manhattan.
Cont ...