The Role of Metallurgy in the NIST Investigation of the World Trade Center Towers Collapse

Peer-Reviewed Study · Tier 1 — Primary Document · National Institute of Standards and Technology

Official source

NIST’s own metallurgical findings from the World Trade Center investigation, published in JOM in November 2007. Authored by seven NIST scientists. This paper contains the figure that 236 structural steel elements were cataloged, representing between 0.25 and 0.5 percent of the more than 200,000 tons of steel used in the towers.

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