The Lake Vermilion-Soudan Underground Mine State Park is a Minnesota state park at the site of the Soudan Underground Mine, on the south shore of Lake Vermilion, in the Vermilion Range (Minnesota). The mine is known as Minnesota's oldest, deepest, and richest iron mine. It formerly hosted the Soudan Underground Laboratory. As the Soudan Iron Mine, it has been designated a U.S. National Historic Landmark.
The 27th level of the Soudan Mine
Lake Superior Iron Ranges
The headframe for shaft #8, still in active use today
MINOS Detector
MINOS
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Main injector neutrino oscillation search (MINOS) was a particle physics experiment designed to study the phenomena of neutrino oscillations, first discovered by a Super-Kamiokande (Super-K) experiment in 1998. Neutrinos produced by the NuMI beamline at Fermilab near Chicago are observed at two detectors, one very close to where the beam is produced, and another much larger detector 735 km away in northern Minnesota.
MINOS service building at Fermilab, the entrance to the underground MINOS hall that hosts the near detector.
NuMI Target Hall (left), the starting point of the NuMI tunnel with the Main Injector in the background.