Rescuers wait at the entrance of Tonghua coal mine where a gas explosion took place in Chongqing municipality May 30, 2009. A gas explosion at a coal mine in southwestern China on Saturday killed at least 30 people, state media reported. The blast occurred at the Tonghua coal mine in Chongqing municipality, according to the official Xinhua news agency, which said 101 miners were rescued, of whom 59 were injured, four seriously. Picture taken May 30, 2009. REUTERS/China Daily (CHINA DISASTER SOCIETY IMAGES OF THE DAY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA
REUTERS/CHINA DAILY