NIST NCSTAR 1: Final Report on the Collapse of the World Trade Center Towers

Government Record · Tier 5 — Official Explanation · National Institute of Standards and Technology Document Date: September 1, 2005

Official source

The final report of the federal investigation into the collapse of World Trade Center 1 and 2, published September 2005. States NIST’s conclusions on the collapse mechanism and its position on the sufficiency of the recovered steel sample.

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