Workers gather Wednesday, May 30, 2012, in a former gold mine that's been revamped into the Sanford Underground Research Facility nearly 4,900 feet beneath the earth in Lead, S.D. The lab's ... more 
Workers gather Wednesday, May 30, 2012, in a former gold mine that's been revamped into the Sanford Underground Research Facility nearly 4,900 feet beneath the earth in Lead, S.D. The lab's experiments will include the world's most sensitive dark-matter detector. Scientists say that the lab could help scientists understand the origins of the universe. (AP Photo/Amber Hunt) less 
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Associated Press | Photo By Amber Hunt
Wed, May 30, 2012 8:19 PM EDT