grumpyolddude

This link may help to explain how th etowers were designed and why they fell in the manner that they did.

http://www.pbs.org/wgbh/nova/wtc/collapse.html

The PBS series NOVA had a program on the subject. Extreme heat, metal stresses and the basic design of the buildings combined to suprize the engineers.

Or is PBS feeding us the govenrment cover-up?

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