WTF, I don't think your article explains how Bldg 7 free-fell. People pay lots of money to get a building to free fall into it's own footprint. That article does nothing to explain how that happened. Sorry.
Originally Posted by CuteOldGuy
NIST Releases Final WTC 7 Investigation Report
For Immediate Release:November 25, 2008
The extensive three-year scientific and technical building and fire safety investigation found that the fires on multiple floors in WTC 7, which were uncontrolled but otherwise similar to fires experienced in other tall buildings, caused an extraordinary event. Heating of floor beams and girders caused a critical support column to fail, initiating a fire-induced progressive collapse that brought the building down.
http://www.nist.gov/el/wtc7final_112508.cfm
NIST Releases WTC 7 Investigation Report for Public Comment
For Immediate Release: September 3, 2008
“Our study found that the fires in WTC 7, which were uncontrolled but otherwise similar to fires experienced in other tall buildings, caused an extraordinary event,” said NIST WTC Lead Investigator Shyam Sunder. “Heating of floor beams and girders caused a critical support column to fail, initiating a fire-induced progressive collapse that brought the building down.”
“Video and photographic evidence combined with detailed computer simulations show that neither explosives nor fuel oil fires played a role in the collapse of WTC 7,” Sunder said.
http://www.nist.gov/el/wtc7_090308.cfm