Photo taken on Aug. 12, 2016 shows the explosion site at a power plant in Dangyang, central China's Hubei Province. A preliminary investigation has shown that the explosion which killed 21 on Thursday in central China's Hubei Province was caused by a broken pipe, local authorities said. A high-pressure steam pipe exploded at Madian Gangue Power Generation Co. Ltd. in Dangyang City around 3:20 p.m. At least 21 people were killed and five others injured. Three of the injured are in a critical condition. (Xinhua/Xiao Yijiu)
