Dr. Griffin listed ten characteristics of the collapses which all indicate that the buildings did not fall due to being struck by planes or the ensuing fires. He explained the buildings fell suddenly without any indication of collapse. They fell straight into their own footprint at free-fall speed, meeting virtually no resistance as they fell--a physical impossibility unless all vertical support was being progressively removed by explosives severing the core columns.related: URLS from the book Fog Facts by Larry Beinhart
The towers were built to withstand the impact of a Boeing 707 and 160 mile per hour winds, and nothing about the plane crashes or ensuing fires gave any indication of causing the kind of damage that would be necessary to trigger even a partial or progressive collapse, much less the shredding of the buildings into dust and fragments that could drop at free-fall speed.
The massive core columns--the most significant structural feature of the buildings, whose very existence is denied in the official 9/11 Commission Report--were severed into uniform 30 foot sections, just right for the 30-foot trucks used to remove them quickly before a real investigation could transpire.
There was a volcanic-like dust cloud from the concrete being pulverized, and no physical mechanism other than explosives can begin to explain how so much of the buildings' concrete was rendered into extremely fine dust. The debris was ejected horizontally several hundred feet in huge fan shaped plumes stretching in all directions, with telltale "squibs" following the path of the explosives downward.
These are all facts that have been avoided by mainstream and even most of the alternative media. Again, these are characteristics of the kind of controlled demolitions that news people and firefighters were describing on the morning of 9/11.