After a massive explosion in China kills dozens and injures hundreds, authorities move to prevent secondary accidents

The World
Smoke rises from shipping containers after explosions in Tianjin, China, August 13, 2015. Two massive explosions caused by flammable goods ripped through an industrial area in the northeast Chinese port city.

At least 50 people have been killed and hundreds have been injured after massive explosions in northeast China.

The blasts, in the port city and industrial center of Tianjin, occurred at a warehouse storing toxic chemicals.

Shockwaves from the blast, which sent a cloud of smoke over the city, were felt up to six miles away.

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Witnesses to the explosions flooded social media with first-hand accounts and arresting images.

The explosions witnessed from Tianjin.
The explosions witnessed from Tianjin.Weibo/2768514033
Another eye-witness photo of the explosion from Tianjin posted to Weibo.
Another eye-witness photo of the explosion from Tianjin posted to Weibo.Weibo/5264651240

The blast was big enough to be seen from space and China's CCTV reports the second explosion was equal to 21 tons of TNT.

As the emergency response continues we're are starting to learn more about what happened.

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