A minor explosion occurred Wednesday at a pump room inside a nuclear fusion reactor laboratory in eastern Japan, injuring one worker, but it did not result in a radiation leak, the Japan Atomic Energy Agency said.The incident occurred at around 4:30 p.m. during routine fire hydrant maintenance work at the agency's Nuclear Science Research Institute in Tokai, Ibaraki Prefecture, northeast of Tokyo. The agency said the worker sustained minor burns to the face and arms.The explosion did not cause a fire or smoke, or any damage to the facility, nor did it affect the operations of other faciliti…READ FULL ARTICLE