Crowley Adit #3 at Sheep Creek, Montana, showing banded carbonatite exposed near the top of the right rib. Credit: US Critical Materials. Staff Writer | June 10, 2025 | 4:40 pm U.S. Critical Materials Corp. and Idaho National Laboratory (INL) have entered into a Phase II Cooperative Research and Development Agreement (CRADA) to establish a … Continue reading US Critical Materials, Idaho National Laboratory partner to build rare earths processing plant