Rescue teams are working to free six miners trapped after a coal mine collapsed in the western US state of Utah, local authorities said.

The collapse is believed to have been triggered by a 4.0 magnitude earthquake about 97 miles (156km) from Salt Lake City. The Genwal mine reported a "cave-in" at about 0400 (0900 GMT) - about an hour after the quake was registered. \
http://news.bbc.co.uk/2/hi/americas/6933790.stm