{"data":{"id":"us/43-cfr-3141.21","jurisdiction":"us","citation":"43 CFR 3141.21","heading":"Geophysical exploration.","body":"Geophysical exploration in Special Tar Sand Areas will be governed by 43 CFR part 3150. Information obtained under a permit must be made available to the BLM upon request.","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":"33672297570fd1f366b73af6e15585487f6a54a472deaeef240a5aba7ae68819","source_id":"us-cfr","stale":true,"prev":"us/43-cfr-3141.10","next":"us/43-cfr-3141.22"},"notice":"GroundRules: Original legal text. Not legal advice."}