The Guardian: Huge blasts in Tianjin kill at least 17 and injure hundreds
(This image is not directly relevant to this entry.)
A tall pillar of fire was observed immediately after the blast. The magnitude of this accident was so great that the fire could be caught by a satellite photograph.
Mirror: China explosion: Dramatic satellite images show how enormous blast could be seen from SPACE
According to the official report, at least 50 persons were killed, and more than 700 people were injured due to this accident. However, the China government authority did not give the explanation of the cause of this accident.
Reuters: Huge blasts at Chinese port kill 50, injure more than 700
In China, industrial accidents are not so rare, unfortunately. It is a fate of rapidly developing countries. Also in Japan, several environmental pollution broke out in the late 20th century. However, this explosion seems too big to be understood as a simple event occurred in a chemical factory. There are several possibilities of the cause of this tragedy, far beyond my imagination.
With praying for the victims, I hope this accident will be fully investigated to clarify the exact figure soon.