South Dakota's DUNE Project — Kiewit-Alberici Preps Former Goldmine for Science Experiment : CEG
Tue March 16, 2021 - Midwest Edition #6 Giles Lambertson â CEG Correspondent An overlook of the open cut, where rock will be deposited from the 4,850-ft. level excavation. (Sanford Underground Research Facility photo) International science came to the Black Hills of western South Dakota, because that's where the deep hole is. Over the last century, the hole — Ross Shaft — was sunk 5,000 ft. to give access to lateral tunnels from which gold was extracted from sedimentary rock to a depth of 8,000 ft. Now the opening into the earth is being repurposed into an entranceway for a highly-...
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