A coal mine collapsed Monday in central Utah, trapping six miners, less than 20 miles from the epicenter of a minor earthquake, authorities said.

The Genwal mine reported a "cave-in" at 3:50 a.m., an hour after the magnitude 4.0 earthquake, the Emery County sheriff's office said.

"Rescue workers are on scene trying to locate six miners that are unaccounted for," the sheriff's office. The miners are in the Crandall Canyon Mine.

"There had been no contact with them," said Dirk Philpot, a spokesman at the Mine Safety and Health Administration in Washington.

The miners were believed to be 1,500 feet below the surface, about four miles from the mine entrance, Philpot said.

Rescuers were within 2,500 feet of their presumed location, he said. He had no details on the difficulty of the search.

Walter Arabasz, the head of the University of Utah's Seismograph Stations, said there was a clear link between the quake and the mine collapse, based on wave lengths.

A command center was being set up in Huntington, about 15 miles from the mine.

John Baza, Utah Division of Oil, Gas and Mining said the rescue crews will work as fast as they can, but they must make sure that the rescuers are safe.

"The issue now is did the collapse restrict the fresh air to the miners," Baza said.

Baza said if the miners are alive, they are well trained and know where to go to survive.

"There is a chance that we will find them in good shape, he said.

Governor Huntsman will visit Crandall Canyon Mine site to get first-hand briefing on what caused the collapse and the on-going search for the six missing miners.

A spokesperson said Governor Huntsman wants to lend his personal support to the families and mining community during this critical time. He is concerned about the safety of the missing miners and the well-being of the local community. The Governor will meet with local officials to discuss what caused the collapse and how best to proceed with search efforts and ensure state support.

Sen. Bob Bennett made a statement regarding the collapse at the Genwal Mine.

"I offer my support to the families of the six missing miners and my thanks to those who are engaged in the current rescue operations. We are keeping in close contact with local officials in both Emery and Carbon Counties and the Department of Labor's Mine Safety and Health Administration and hope to know more as the day goes on," said Senator Bennett.

The sheriff's office had said earlier there were no reports of damage or injuries blamed on the quake, centered under the Huntington Canyon area, about 100 miles southeast of Salt Lake City.