{"data":{"id":"us/43-cfr-3141.51","jurisdiction":"us","citation":"43 CFR 3141.51","heading":"Economic evaluation.","body":"Prior to any lease sale for a combined hydrocarbon lease, the authorized officer will request an economic evaluation of the total hydrocarbon resource on each proposed lease tract exclusive of coal, oil shale, or gilsonite.","path":["Title 43—Public Lands: Interior","Subtitle B—Regulations Relating to Public Lands","CHAPTER II—BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR","SUBCHAPTER C—MINERALS MANAGEMENT (3000)","PART 3140—LEASING IN SPECIAL TAR SAND AREAS","Subpart 3141—Leasing in Special Tar Sand Areas"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-43.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:15Z","sha256":"c35d7afb945c62327f9f913cf00374609c2a2fb230a1ad502950cdfb57f53aca","source_id":"us-cfr","stale":true,"prev":"us/43-cfr-3141.42","next":"us/43-cfr-3141.52"},"notice":"GroundRules: Original legal text. Not legal advice."}