How did WTC 7 collapse if it wasn't a controlled demolition?
WTC 1 and 2 were hit each hit by an aeroplane, and they collapsed.
However, WTC 7 was NOT hit by a plane and did NOT suffer major fires, and yet, incredibly, it collapsed neatly into its own footprint in 6.5 seconds. WTC 5 and 6, smaller buildings closer to the twin towers were gutted by fire, but they did NOT collapse.
In 100 years of steel frame building construction, NO STEEL FRAME BUILDING HAS EVER COLLAPSED SOLELY DUE TO FIRE, even though many have burned MUCH HOTTER and FOR MUCH LONGER.
... Except, we are told, WTC 7.
Hence my question:
If WTC 7 wasn't a controlled demolition, then how did it collapse?
And if it was a controlled demolition, which the video footage looks exactly like, and Larry Silverstein the building owner implies on PBS television, then who expertly placed the explosives to implode this building?
(Click on WTC 7 link)
btw: the Silverstein group made nearly a $500 million profit just on this one building.