Rescue teams are working to free six miners trapped after a tunnel in a coal mine collapsed in the western US state of Utah, local authorities said.The incident is believed to have been triggered by a 4.0 magnitude quake, which struck a few miles away.
The GenWal mine reported a "cave-in" at about 0400 (0900 GMT) - about an hour after the quake was registered.
The mine is reported to be operated by Utah American Energy, and is located about 225km from Salt Lake City.
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