GUIYANG, China, March 13 (UPI) --
Rescue operations were under way in a coal mine in southwestern China where an accident killed 21 miners and left four others missing, local authorities said.
The victims were among 83 coal miners who were working underground when a blast occurred about 8 p.m. Tuesday, China's Xinhua News Agency reported Wednesday.
Fifty-eight of the workers at the Machang Coal Mine in Guizhou province managed to get to the surface safely.
The cause of the accident was under investigation. Further details were not available.
© 2013 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.