WTC nuclear demolition: an 'earthquake' before its collapse.

Video: visible ground shaking at the moment of the WTC demolition.

In this footage you could see a nuclear demolition of the WTC-2 (the North Tower). It is important to notice that the Tower was visibly shaking before its top started to crash down. You will most likely fail to notice the shaking at the first glance. You have to try to replay this video several times and try to lock your eyes on the Tower - simply disregard any details, except the shaking and you will notice it, at last. This shaking was caused by an earthquake measuring ~ 5.7 on Richter scale. That happened because of an underground thermo-nuclear explosion of 150 kiloton in TNT yield beneath the Tower. In the next couple of seconds the Tower structure was completely pulverized - in the same pattern as shown on the drawing to the right. So in the next moment the heavy undamaged top of the Tower began to crash down, because under it was nothing but a pile of complete dust with only some few fragments in the thin intermediate zone.

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