{"data":{"id":"us/30-cfr-57.12086","jurisdiction":"us","citation":"30 CFR 57.12086","heading":"Location of trolley wire.","body":"Trolley and trolley feeder wire shall be installed opposite the clearance side of haulageways. However, this standard does not apply where physical limitations would prevent the safe installation or use of such trolley and trolley feeder wire.","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":"fd2a7fe1ab49170ff13f5b1b8e7c53e491e8b20ef7961dd3a4e5bc50671cbe82","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.12085","next":"us/30-cfr-57.12088"},"notice":"GroundRules: Original legal text. Not legal advice."}