At least 30 miners were killed and 13 more remained trapped in three separate coal mine accidents in China during the weekend, state media reported. All 28 miners in the Xiaonangou coal mine in northwestern Shaanxi province died when an underground cable caught fire on Saturday night, Xinhua news agency said, citing the general office of the Shaanxi provincial government. Police detained the owner of the mine. In central Hunan province, officials were investigating the cause of an explosion at a coal mining area that killed two people. Separately, in northwestern Gansu province, 13 miners remained trapped underground when a coal shaft flooded on Sunday. Three others were lifted to safety, Xinhua said.