Mining Law Blog (Mineral Law)

The Forest Service’s Proposed Rule on Locatable Minerals: Clearer Thresholds, Streamlined Review—What It Means for Idaho and the West

On Feb. 20, 2026 the U.S. Forest Service released a proposed rule that replaces the 1974 subjective “significant disturbance” test with objective, acreage‑based thresholds for locatable‑mineral activities on National Forest lands. The rule creates a new Operating Notice track for low‑impact exploration, adds detailed front‑end review steps, and modernizes terminology and financial‑assurance requirements. It also aligns Forest Service surface‑management with the BLM to streamline cross‑agency permitting. Public comments are due by April 21, 2026.