7. The Case of 9/11It has taken nearly 40 years for the deception to have been decisively settled on the basis of objective scientific evidence. In the case of 9/11, however, we are vastly more fortunate. As a consequence of inquiries by Nafeez Ahmed (2002), Thierry Meyssan (2002), Paul Thompson (2004), Michael Ruppert (2004), and David Ray Griffin (2004, 2005), among others, we already know that the official account of 9/11 cannot possibly be correct. That account contends that 19 Arabs, with feeble ability to pilot aircraft, hijacked four airliners and then executed demanding maneuvers in order to impact the World Trade Center and the Pentagon;36 that the damage created by their impact combined with the heat from burning jet fuel brought down WTC1 and WTC2; that WTC7 was the first building in history to be brought down by fire alone; and that the Pentagon was struck by United Flight 77, which was a Boeing 757.37 The basic problem with this "conspiracy theory", as in the case of JFK, is that its truth would violate laws of physics and engineering that cannot be transgressed.
The extremely high melting point of structural steel (about 2,800° F) is far above the maximum (around 1,500° F) that could have been produced by jet fuel under optimal conditions. Underwriters Laboratory had certified the steel used in the World Trade Center to 2,000° F for up to six hours.38 Even lower maximum temperatures result after factoring in insulation, such as asbestos, and the availability of oxygen.39 Since steel is a good conductor, any heat applied to one part of the structure would have been dissipated to other parts. WTC1, the North Tower, was hit first at 8:46 AM/ET
and collapsed at 10:28 AM/ET, whereas the South Tower, hit second at 9:03 AM/ET, collapsed at 9:59 AM/ET.
They were exposed to fires for roughly an hour and a half and an hour, respectively.
Insofar as most of the fuel was burned off in the gigantic fireballs that accompanied the initial impacts, that these towers were brought down by fuel fires that melted the steel is not just improbable but physically impossible.40http://www.d.umn.edu/%7Ejfetzer/fetzerexpandedx.pdf