US lawFederal (United States)RegulationsTitle 43 CFR — Public Lands: InteriorChapter II — BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIORPart 3500 — LEASING OF SOLID MINERALS OTHER THAN COAL AND OIL SHALESubpart 3514 — Lease Relinquishments and Cancellations3514.2043 C.F.R. § 3514.20When is my relinquishment effective?Last amended: 2016Year: 2026Length: 16 wordsOfficial source Cite as 43 C.F.R. § 3514.20 (2026)When BLM approves your relinquishment, it will be effective as of the date you filed it.Previous43 C.F.R. § 3514.15Next43 C.F.R. § 3514.21