{"data":{"id":"us/43-cfr-3832.41","jurisdiction":"us","citation":"43 CFR 3832.41","heading":"What is a tunnel site?","body":"A tunnel site is a subsurface right-of-way under Federal land open to mineral entry. It is used for access to lode mining claims or to explore for blind or undiscovered veins, lodes, or ledges not currently claimed or known to exist on the surface.","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 3832—LOCATING MINING CLAIMS OR SITES","Subpart D—Tunnel Sites"],"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":"2ead0e1e398e1c6a90629e0571bf81f7caee792b22338bf8cfddd756ea75cd04","source_id":"us-cfr","stale":true,"prev":"us/43-cfr-3832.40","next":"us/43-cfr-3832.42"},"notice":"GroundRules: Original legal text. Not legal advice."}