Chinese officials are not yet saying what caused Wednesday’s fire and explosion in the port city Tianjin, which to date has killed dozens of people and injured more than 700.
The National Earthquake Bureau said the first blast was the equivalent of three tons of TNT, and the second blast the equivalent to 21 tons of TNT.
21 ton blast
Authorities say the blasts started at a warehouse owned by a company that stores hazardous materials. The initial explosion apparently triggered an even bigger one.
Chinese rescuers pulled out a firefighter who was trapped for 32 hours, and more than a dozen other firefighters remain missing.
This video, was taped from less than 1km away. Posted to YouTube by Daniel Van Duren, who wrote that he was on the top of a 33 story building watching the shooting stars when the explosions started.
Images and video posted on social media show the devastation:
I am text block. Click edit button to change this text.