BEIJING (Reuters) - A blast at a coal mine in southern China has killed 29 people, state news agency Xinhua said on Sunday, in the latest disaster to hit the accident-prone industry. The gas explosion happened on Saturday afternoon at the state-owned Xialiuchong colliery in Hunan province's Hengyang while 35 miners were at work, the report said. One miner who had remained alive was later found dead, it said. The six survivors have been sent to hospital. Luo Lin, the head of the State Administration of Work Safety, and Hunan governor Xu Shousheng have arrived at the site of the accident to oversee the investigation, Xinhua said.