The building has not fallen down on itself yet...and we do not know if it will. One would think that if you took a small plane and one small building that in time it will tumble down like the WTC into dust onto itself considering the ratio of fuel and size. This would be about equal. Let's keep an eye on this building and see what happens. Watch how the smoke does not crawl onto the streets but rise.
Unlike the WTC, the smoke crawled along the streets completely destroying something like 1500 cars along the way. Here, the smoke is just going into the air, like we are used to. Something to think about and something to remember. I am sorry for the loss of lives and for their families.