StacksVerified U.S. regulatory reference

43 CFR §3505.62

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
You must prove that:
  1. (a)You explored with reasonable diligence and were unable to determine the existence and workability of a valuable deposit covered by the permit. Reasonable diligence means that, in BLM's opinion, you drilled a sufficient number of holes or performed other comparable prospecting to explore the permit area within the time allowed; or
  2. (b)Your failure to perform diligent prospecting activities was due to conditions beyond your control.