IRIS Metals Limited (ASX: IR1) has reported high-grade rubidium assay results from its 2023 and 2024 drilling programs at the Beecher Project, located in the southern Black Hills of South Dakota, USA (Figure 1). The results confirm a significant rubidium discovery alongside the project’s established lithium resource, further positioning Beecher as a multi-commodity critical minerals asset in a mining-friendly U.S. jurisdiction.