Did you watch the youtube special on the fire part? One of the cranes used was red hot from top to bottom before it collapsed, kind of made me think of WTC towers. If all the cross bracing was the reason for that and there was a 'small pile' is it possible that the core was almost all removed before the day they fell. That much steel would just have tangled up and the fall would not have been complete.
I also see that same thing happening if they try to shut down a well that is not a single hole. The gas will just make a route beside the pipe and the other natural cracks in the rocks and up as gas in water wells. That can be solved by the water going into a tank in the attic and then the house water is drawn from the bottom of the tank and the gas that is released is collected from the top as needed. No idea what the water needs after that.