Source – where BBC says “At 09:58 Eastern Daylight Time the South Tower of the World Trade Center collapsed.” By most accounts it happened at 9:59. Unknown camera operator, likely an amateur. Footage appeared on the web Sept. 1, 2011 for the 10 year anniversary. Archived on YT by 911allcausticcamera.
BBC Website 2011
YouTube 1 & 2
