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The collapse of the Twin Towers due to impact-damaged structure combined with prolonged fires
The official, evidence-based conclusion is that the twin towers collapsed because hijacked airliners severely damaged structural components and ignited large multi-floor fires that weakened key elemen...
concluded after a multi‑year technical investigation that fires ignited by debris from the nearby collapsing towers led to a progressive internal failure and the full collapse of at about 5:20 p.m. on...
No reporting provided links Professor Chris W. Johnson to a specific published technical analysis of the Twin Towers; available engineering literature instead attributes the mainstream, peer-reviewed ...