If Steel beams melt at 2,750 Degrees F, then how did jet fuel that burns at a rate of 1,500 Degrees F, compromise the structure integrity of the WTC Buildings to the point of full collapse?  Also, if the planes impacted the top of the towers then how did the bottom of the towers become so weak to the point of full collapse?  With this all in mind, there is another odd question still to be resolved:

 

WTC BLDG 7 was never hit by a plane, yet it collapsed fully as well.  How was that possible?

 

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Trevor.