Rescuers in the US state of Utah are bringing in more drilling equipment to try to free six miners trapped in a collapsed coal mine since early Monday.So far there has no been no contact with the men, thought to be about 1,500 feet (457m) below the surface and 3.4 miles (5.5km) from the mine entrance.
"We'll get them back but it may be as much as three days," the head of the mining company told reporters.
The mine is built into a mountainside, 140 miles (225km) from Salt Lake City.
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