{"data":{"id":"us/30-cfr-57.20020","jurisdiction":"us","citation":"30 CFR 57.20020","heading":"Unattended mine openings.","body":"Access to unattended mine openings shall be restricted by gates or doors, or the openings shall be fenced and posted.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES","Subpart S—Miscellaneous"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-30.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:24Z","sha256":"9506d5ca326d4a9f02429c1e97b5f85e02a7a4cb311f0c4583dfe60d43aff924","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.20014","next":"us/30-cfr-57.20021"},"notice":"GroundRules: Original legal text. Not legal advice."}