for more than 31 hours was pulled to safety. but at least 56 people were killed in the still unexplained warehouse explosions. more now from nbc s ian williams in tianjin, china. at least one piece of good news today, a 19-year-old firefighter pulled out alive. now, nobody expected that. at the same time, a team of bio chemical specialists have arrived while officials admitting they don t really know precisely what deadly toxins they re dealing with. the fire raged on this morning, thick black smoke billowing into the tianjin sky. hundreds of firefighters are battling the inferno. today pulling out alive one of their couple leagues treated in a nearby hospital, more than 20 firefighters died in the blast and 13 are still missing. officials say firefighters themselves may have triggered the blasts by hosing water on an initial fire in a warehouse containing the volatile chemical calcium carbide. that triggered the first blast which moments later sparked the
thick black smoke billowing into the sky. hundreds of firefighters are battling the inforno. today, pulling out alive one of their colleagues treated in a nearby hospital. more than 20 firefighters died in the blast, and 13 are still missing. officials say firefighters themselves may have triggered the blasts by hosing water on an initial fire in a warehouse containing the volatile chemical calcium carbide. that triggered the first blast which moments later sparked the second bigger explosion. as other chemicals caught fire. captured in this cell phone video, shot by american dan van duran. he continued to film until it became too terrifying. let s go! let s go down! he told me he thought they were going to die. it was just monumental. i thought it was a nuclear bomb going off in my face, what it looked like. officials have tried to reassure nervous residents pollution levels are normal while admitting they don t
nobody expected that. at the same time, a team of biochemical specialists has arrived with officials add mitting they don t really know precisely what deadly toxins they re dealing with. the fire raged on this morning. thick black smoke in the tianjin sky. today, pulling out a live one of their colleagues. more than 20 firefighters died in the blast. and 13 are still missing. officials say firefighters themselves may have triggered the blasts by hosing water on an niche fire in a warehouse containing the volatile chemical calcium carbide. that triggered the first blast which moments later triggered the following explosions as other chemicaling caught fire. american dan van durn continued to film. let s go! let s go down! reporter: he told me he