| https://911researcharchives.org/911/videos/9-11- South Tower Collapses 9-59 a.m.mp4 (https://911researcharchives.org/911/videos/9-11-%20South%20Tower%20Collapses%209-59%20a.m.mp4) | The south tower of the World Trade Center collapses 56 minutes after the impact. Debris was plummeting into the streets below. A massive cloud of dust and debris forms and slowly drifts away from the building. |