43 C.F.R. § 3505.61 : Public Lands: Interior — REGULATIONS RELATING TO PUBLIC LANDS — BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR — MINERALS MANAGEMENT (3000) — LEASING OF SOLID MINERALS OTHER THAN COAL AND OIL SHALE — PROSPECTING PERMITS —PROSPECTING PERMIT TERMS AND CONDITIONS — May BLM extend the term of my prospecting permit?
We may extend prospecting permits for phosphate and hardrock minerals for up to an additional 4 years, and for potassium and gilsonite for up to an additional 2 years. We cannot extend sodium and sulphur prospecting permits.