{"data":{"id":"us/30-cfr-77.1901-1","jurisdiction":"us","citation":"30 CFR 77.1901-1","heading":"-1 Methane and oxygen deficiency tests; approved devices.","body":"Tests for oxygen deficiency shall be made with a permissible flame safety lamp or other means approved by the Secretary, and tests for methane shall be made with a methane detector approved by the Secretary.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","Subpart T—Slope and Shaft Sinking"],"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":"87c5719ad0d3645802d4d0dc6736d778e10cedd89b8ef87ab413e89ea531767f","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-77.1901","next":"us/30-cfr-77.1902"},"notice":"GroundRules: Original legal text. Not legal advice."}