Rescue efforts continue in Utah for six miners missing since the mine they were working in collapsed early Monday.
So far rescuers have not been able to reach the area where the miners are believed to be.
Lorie Hirose has the latest from Huntington, Utah.
A setback today, rescuers are not sure a small two inch drill actually reached the spot with the missing miners.
Based in part on air quality readings, they now say the drill could have drifted and missed the cavity altogether.
They next plan sending special survey equipment down that hole to learn more.
Richard Stickler, with the Mine Safety and Health Administration said, "the advantage of the 2 1/2 inch hole was it was fast, the disadvantage is it is not as accurate. We can't steer it, we don't have good control over it. Their best hope now, a bigger hole that's being drilled. Rescuers are confident that will reach the right place. There is no reason to lose hope. There is possibility these miners are still alive because we don't know for sure where this bore hole drilled in."
The miners have been buried eighteen hundred feet underground since part of the Crandall Canyon Coal Mine collapsed early Monday morning.
Overnight a c-17 military cargo plane carried a special high-resolution camera into Utah.
Rescuers hope to drop it into a larger eight inch hole to take a look around the caved-in cavity.
The miner's families face progress reports with quiet resolve.
Robert Murray, President of Murray Energy Corporation, said, "I don't think they've drawn conclusions yet because there's a number of mining people in there."