30 U.S.C. § 82 — New or supplemental patents, in case of lands subsequently classified as noncoal

This section covers cases where a public-land patent was already issued to a claimant under sections 81 and 83 to 85 of this title, and that patent reserved all coal deposits in the land to the United States. If the land covered by that patent is later classified as noncoal — meaning it turns out not to be coal land after all — the Secretary of the Interior is authorized and directed to issue a new or supplemental patent that drops the coal reservation.