{"data":{"id":"us/30-cfr-57.7806","jurisdiction":"us","citation":"30 CFR 57.7806","heading":"Oxygen intake coupling.","body":"The oxygen intake coupling on jet piercing drills shall be constructed so that only the oxygen hose can be coupled to it.","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 F—Drilling and Rotary Jet Piercing"],"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":"9189d4205c2d00fd127d59e51963b47737c9a3178d457751a1595d92b831c660","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.7805","next":"us/30-cfr-57.7807"},"notice":"GroundRules: Original legal text. Not legal advice."}