Mineral Hill

An early-stage rare-earth-element (REE) exploration property in the northern Idaho REE-Thorium Belt near Salmon, Idaho, recognized in the U.S. national REE inventory (USGS/IGS/DOE). The property hosts carbonatite-related REE mineralization; 2025 work included a large-scale geophysics program (LiDAR, magnetics, radiometrics) and surface sampling, with a sample at the Cardinal prospect returning greater than 17.6% total REEs. To date no mineral reserves or resources have been established. Part of IDR's ~21,385-acre REE landholdings; a long-term lease added ~1,500 acres of in-holdings covering the Cardinal prospect in 2025.