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Originally posted by bsbray11
That smoke is drifting up out of the lobbies of both buildings, probably from the basements. We can conclude this here if enough photo/video evidence is presented.
Mike Pecoraro reported an explosion in the basement of WTC1 that coincided with the plane impact, in which a mechanical room in the floor above him filled with white smoke.
Well I bet it did it was the MECHANICAL ROOM after all and the building just took a big hit. Lots of power and water with suddenly no place to go except BOOM!!!