Photo taken on Nov. 30, 2016 shows the accident site in Qitaihe City, northeast China's Heilongjiang Province. Twenty-two people were trapped in a coal mine accident in Heilongjiang Province, said the rescuers Wednesday. The accident happened at around 9:00 p.m. on Tuesday in Qitaihe city. Rescue work is underway. Cause of the accident is being investigated. (Xinhua/Wang Song)