{"data":{"id":"us/30-cfr-57.14216","jurisdiction":"us","citation":"30 CFR 57.14216","heading":"Backpoling.","body":"Backpoling of trolleys is prohibited except where there is inadequate clearance to reverse the trolley pole. Where backpoling is required, it shall be done only at the minimum tram speed of the trolley.","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 M—Machinery and Equipment"],"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":"eb63e55ebfa73a5679137dc7d9607500bf0612118d11d3ffda4af0221aebb24b","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.14215","next":"us/30-cfr-57.14217"},"notice":"GroundRules: Original legal text. Not legal advice."}