Category: WTC smoke

Newly released aerial photos of the World Trade Center terror attack capture the towers’ dramatic collapse, from just after the first fiery plane strike to the apocalyptic dust clouds that spread over lower Manhattan. But the photos suggest something else was going on. This does not look like a “collapse”. The images were taken from a police helicopter–the only photographs allowed in the air space near the towers on September 11, 2001. Underwriters Laboratory had certified the steel up to 2,000°F for three to four hours. When NIST sampled 236…