Dark matter detector nearing activation in SD mine - Article Photos 3/3

In this July 31, 2012 photo provided by Sanford Lab, Mikayla Thompson, of Yale University, works near the exterior of the water tank for the Large Underground Xenon experiment a mile beneath the earth’s surface in a shuttered gold mine in Lead, S.D. The experiment, known as LUX, could begin collecting data as early as February _ and, if all goes as planned, that data could answer age-old questions about the universe and its origins, scientists said Monday, Nov. 19, 2012. (AP Photo/Courtesy of Sanford Lab, Matt Kapust)