{"data":{"id":"us/30-cfr-57.20032","jurisdiction":"us","citation":"30 CFR 57.20032","heading":"Two-way communication equipment for underground operations.","body":"Telephones or other two-way communication equipment with instructions for their use shall be provided for communication from underground operations to the surface.","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":"8894d68e0881be759ba9af4e41f479b51a515c66ea06c72ed24ccef54c516d5f","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.20031","next":"us/30-cfr-57.22001"},"notice":"GroundRules: Original legal text. Not legal advice."}