Aerial photo taken on Sept. 27, 2020 shows the coal mine where a carbon monoxide accident happened in southwest China's Chongqing Municipality. A total of 16 people were killed in a coal mine due to excessive levels of carbon monoxide in southwest China's Chongqing Municipality, local authorities said Sunday. The accident occurred at the Songzao coal mine, which belongs to a local energy company, in Qijiang District early Sunday morning, according to the district government. (Xinhua/Huang Wei)
