A gas explosion in a coal mine in the Hunan province of China has killed 29 miners, according to Chinese state media. Six miners were rescued alive after the blast at the Xialiuchong Coal Mine this weekend, reported the Xinhua news agency.

The Asian superpower is by far the world’s largest producer of coal, producing more than 3,000Mt (metric tonnes), roughly half of the world’s hard coal, according to the International Energy Agency.

The accident is one of a string of incidents in China, with the most recent accident in the headlines last month claiming 17 lives.