The story

Rescue workers trying to reach six men trapped in Utah's Crandall Canyon mine found survivable space Saturday after punching a second, wider hole into a cavity where the workers are believed to be trapped and lowering a camera, a federal official said.

But efforts to signal the miners were once again met with silence.

Richard Stickler, director of the U.S. Mine Safety and Health Administration, said the camera -- which showed vertical images -- is being pulled out. Read full article »

CNN's Vivienne Foley, Ed Lavandera and Gary Tuchman contributed to this report.

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