** ADVANCE FOR SUNDAY, FEB. 27 ** In this Aug. 31, 2010 photo, environmentalist Deb Thomas stands next to the Crosby 25-3 gas well, which blew out in 2006 when it was being drilled in the Line Creek ... more 
** ADVANCE FOR SUNDAY, FEB. 27 ** In this Aug. 31, 2010 photo, environmentalist Deb Thomas stands next to the Crosby 25-3 gas well, which blew out in 2006 when it was being drilled in the Line Creek Valley, about 40 miles east of Yellowstone National Park. The blowout released potentially explosive gas and authorities evacuated homes in the valley for three days. Local residents remain concerned about a plume of groundwater pollution they fear could spread to their water wells. less 
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Associated Press | Photo By Mead Gruver
Sun, Feb 27, 2011 1:43 PM EST