A fire after a series of explosions that killed at least 50 people and left 700 injured on Wednesday in Tianjin, a city on China's eastern coast, is now mostly under control.

New video shows thick, grey clouds of smoke spiraling upward from the explosion site where the warehouse of a logistics company once stood. A videographer with Fa Wan, a Chinese media company, shot the video from about 414 feet above ground.

The fire started in the warehouse of RuiHai Logistics, where over a dozen types of chemicals were being stored.

As of 9 p.m. local time Thursday in China, 17 firefighters had died in fighting the fire, the People's Daily posted on Weibo. China's national fire department initially shared details about the first six firefighters who died in a widely circulated post that listed the birthdates, titles and photos of each.

One of the firefighters, Yuan Hai, was 18. Others were in their early 20s and 30s.

Additional footage from QQ.com shows the sheer scale of the fire as it burned in the early morning.

The thick smoke clouds were also picked up by satellites. Skybox Imaging, a subsidiary of Google, posted these images of the explosion site Thursday, showing a neat grid before and the smoke-filled aftermath.