from ABC news
Far below the Black Hills of South Dakota, crews are building the world’s deepest underground science lab at a depth equivalent to more than six Empire State buildings — a place uniquely suited to scientists’ quest for mysterious particles known as dark matter.
Scientists, politicians and other officials gathered Monday for a groundbreaking of sorts at a lab 4,850 foot below the surface of an old gold mine that was once the site of Nobel Prize-winning physics research.
“This is a great moment in the history of South Dakota and in the history of underground science,” Gov. Mike Rounds said of the official start of the Sanford lab project. . . . Read Complete Report