{"data":{"id":"us/30-cfr-57.12066","jurisdiction":"us","citation":"30 CFR 57.12066","heading":"Guarding trolley wires and bare powerlines.","body":"Where metallic tools or equipment can come in contact with trolley wires or bare powerlines, the lines shall be guarded or deenergized.","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 K—Electricity"],"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":"fb82461a8c3670ec5e82dbffc10363e5962aea0ef6d148660fd6e4300e05d0b5","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.12065","next":"us/30-cfr-57.12067"},"notice":"GroundRules: Original legal text. Not legal advice."}