Current thinking is contractors using seawater to mix the cement (which over time corrodes the supportive rebar) or a sinkhole. The blue-white flashes at the beginning I take to be electrical wires getting yanked as the structure falls.JUST IN: 7News has obtained surveillance video of the moment the Champlain Towers South Condo collapsed in Surfside early this morning.
According to a fire official, 35 people were pulled from the collapsed building. Search and rescue efforts ongoing. https://t.co/Ac7KgnJOSO pic.twitter.com/oeczbumRG9— WSVN 7 News (@wsvn) June 24, 2021
51 missing in Miami collapse. Did a search of 51 in drops and saw nothing.