Beijing, Rajab 07, 1436, April 26, 2015, SPA -- Nine workers were killed and 12 injured by a toxic gas explosion in a south-western China mine, dpa cited state media reported on Sunday. The workers were trapped as the mine filled with carbon monoxide after the explosion Saturday on the outskirts of Kunming, Yunnan province, official Xinhua news agency said. --SPA 14:09 LOCAL TIME 11:09 GMT www.spa.gov.sa/w