The whole "controlled demolition" garbage never made any sense at all. The buildings were burning and there was no way to stop the fires, they would have fallen at some point. Steel girders are made by fire, they can be unmade by fire. Rosie O'Donnell and the truther morons evidently have never seen a steel mill.
Just more proof fires do not melt steel. The buildings came down very quick and so did #7, all freefell pretty much.
Fire does in fact melt steel. It is how steel is formed, with FIRE.