Rescuers get ready to get into the well to search for survivors at the site of the gas blast in Heshun County in Jinzhong City, north China's Shanxi Province, on August 25, 2009. [Xinhua]

Rescuers clean up the falling objects from the entrance of a well at the site of the gas blast in Heshun County in Jinzhong City, north China's Shanxi Province, on August 25, 2009. [Xinhua]