Why WTC Building 7 Collapsed

event.on24.com — The Commerce Department's National Institute of Standards and Technology (NIST) will hold a media briefing at 11 a.m. EDT on August 21, 2008, at its campus in Gaithersburg, Md., on the findings and recommendations from its building and fire safety investigation of the collapse of World Trade Center Building 7 (WTC 7). Aug 21, 2008 View in Crawl 4