World Trade Center 7

A separate building that collapsed later that day. NIST attributes its probable collapse sequence to uncontrolled fires and progressive structural failure.

Related Reports

• World Trade Center
• Office of Emergency Management
• NIST investigation
• WTC 7 fires

Sources and Records

1. FAQs: NIST WTC 7 Investigation
2. 9/11 Commission — Heroism and Horror — Chapter 9, sections 9.1–9.2
3. NIST WTC 7 investigation — questions and answers — Questions 6 and 8–10: probable collapse sequence and water supply

AI generated report by Explorvia.com.