Rescuers trying to find six miners will begin boring a sixth hole down into Utah's Crandall Canyon mine Friday, and the search will stop if no signs of life are found, the coal mine's co-owner said.
"This is the last hole," Bob Murray, CEO of Murray Energy, said Wednesday evening. "If we don't find anybody alive in that hole, there's nowhere else that anyone ... would know where to drill."
Murray said work on the sixth hole, which will go down into the area where the miners were known to be working when the mine collapsed August 6, should be completed by Saturday. 
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