Mine blast survivor Daniel Rockhouse, center, hugs family members following their briefing with police and company officials in Greymouth, New Zealand, after visiting the Pike River coal mine, Monday, Nov. 22, 2010. Rescue officials are preparing to send a high-tech robot into a mine tunnel to transmit pictures and assess toxic gas levels three days after an explosion left 29 miners missing underground. (AP Photo/New Zealand Herald, Mark Mitchell)
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