Rescuers work to free trapped miners after China blast kills 17
A coal mine explosion in northern China has killed 17 people and left 10 others trapped, state media and officials said.
Four miners were rescued after the blast, which occurred when 31 people were working underground, said the Chifeng city government in China's Inner Mongolia region.
China's official Xinhua News Agency reported that 17 miners were killed in the blast. Rescuers were searching for the 10 remaining miners trapped by the explosion at a coal mine run by the Baoma Mining Co Ltd, Xinhua said.
News of the blast came just hours after 21 Chinese miners who were trapped for four days after an explosion hit their unlicensed coal mine were confirmed dead in north-east China's Heilongjiang province. Four people were arrested in connection with that disaster.
China's mining industry has long been among the world's deadliest, and top work safety regulators have acknowledged that some mines cut corners on safety standards due to financial pressure.