Lead, SD, March 18, 2025 (GLOBE NEWSWIRE) -- The Sanford Underground Research Facility (SURF) in the Black Hills of South Dakota is America’s Underground Lab – with cutting-edge experiments in biology ...

The second stage was commissioned in January 2017 and bauxite mining started. The shaft depth is 1.5 km. The shaft is the deepest in Russia and is among top five deepest mines across the globe.

During the tour you’ll see the original 700-foot-deep mine shaft – once contracted to produce 90,000 tons of anthracite coal – as well as a former miner's hospital, among other highlights.

The facility's high-tech science experiments are kept inside a massive historic structure of 370 miles of tunnels and shafts that was once North America's deepest gold mine. The Yates Shaft is one of ...