The cause of the fire blast in one of the warehouse of Tianjin port was still unknown according to the city officials as reported on Friday.

Military chemical experts have been told to wear protective clothing before entering and testing the toxic gases of the explosion site.

The said warehouse that exploded specialises handling lethal goods and is owned by a company dubbed Ruihai Logistics

Cause of fire blast in Tianjin, China still unknown

According to the company’s website these lethal goods contains compressed gas, flammable liquid and toxic chemicals- which can be very explosive when mixed with water or liquid.

Gao Huaiyou, deputy director of Tianjin’s work safety watchdog, said there were discrepancies between accounts by company and customs officials, adding that damage to company offices made it hard to identify the chemicals.

“Many types of different materials with different characteristics are mixed together and could at any time result in a chemical reaction or explosion,” said Zhou Tian, Tianjin’s fire department chief.

Further recovery efforts would be slow because of the potentially complex mix of chemicals at the site, he added.

As reported by John Sudworth of BBC News from Tainjin, once the fire is extinguished, the chemical containers will be moved to a safety zone, away from the heat, so that the contents can be analysed.

Meanwhile, Wen Wurui, head of Tianjin’s environmental protection bureau, said pollution levels were being monitored and other officials insisted any contaminants had been contained.

The residents nearby the explosion remains nervous, for some were posting concern online on the environmental impact and suspicions that the public may not be knowing the whole truth.

Fire are still burning and sending plumes of smokes over the explosion site where it bore destroyed building, burned-out vehicles and crumpled shipping containers.

As reported, there was another small fire blast at the site on Friday morning.

Officials said more than 6,000 residents were forced to leave their homes and had been relocated at several nearby schools as their temporary shelters.

As of now, at least 56 people died and more than 720 were injured, 25 critically and 33 seriously, in the explosions late on Wednesday evening.

SOURCES:  Kicker Daily News