{"data":{"id":"us/30-cfr-57.12041","jurisdiction":"us","citation":"30 CFR 57.12041","heading":"Design of switches and starting boxes.","body":"Switches and starting boxes shall be of safe design and capacity.","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":"44dc2a509a30d6b23ce3fa5117d6159879dcb95b0cc4470953d2e8b038def9ab","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.12040","next":"us/30-cfr-57.12042"},"notice":"GroundRules: Original legal text. Not legal advice."}