The Idaho Rare Earth Belt stretches along a northwest trending zone measuring approximately 70 miles long by 8 miles wide. This belt possesses most of the REE lode occurrences in Idaho. Along this 70-mile Belt, IDR controls the Mineral Hill Property in the northwest, the Diamond Creek Property in the middle; and its greatly expanded Lemhi Pass Property in the southeast. Early-day Cold War prospectors helped define the Idaho Rare Earth Belt through participation in a nation-wide search for energy minerals - both uranium and thorium, which was overseen by the Atomic Energy Commission, the Department of Energy (DOE), the Department of Defense (DOD) and others. During this time, many of our country’s rare earth elements (REE) deposits were identified and documented in several USGS and other agency publications. However, while their importance was recognized, REEs would not become a noted ‘critical mineral’ until now, decades later. The early-day geologic work helped delineate many prospects that eventually became listed by the United States Geologic Survey (USGS) – including Idaho Strategic's Mineral Hill, Lemhi Pass, and Diamond Creek projects.