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SNOLAB is an underground science laboratory specializing in neutrino and dark matter physics. Situated two km below the surface in the Vale Creighton Mine located near Sudbury Ontario Canada, SNOLAB is an expansion of the existing facilities constructed for the Sudbury Neutrino Observatory (SNO) solar neutrino experiment.
But deep underground in SNOLAB, the level of cosmic rays is reduced 10 millionfold, Smith said. In addition, the lab space, purposely excavated starting 2004, has been painstakingly cleaned of all dust particles and is climate controlled. Researchers have to shower before entering to make sure they don't bring any new dust with them.