Four dead, 90 trapped in Chinese coal mine with elevated carbon monoxide levels

By Hira Humayun, CNN (CNN) — At least four people are dead and 90 others are trapped underground after carbon monoxide levels “exceeded limits” in a coal mine in northeast China on Friday night, according to state media. Rescue efforts are continuing at the Liushenyu coal mine in Changzhi City, Xinhua News reported. The accident