{"data":{"id":"us-mo/mo.-rev.-stat.-293.120","jurisdiction":"us-mo","citation":"Mo. Rev. Stat. § 293.120","heading":"Air safety requirements.","body":"Air in which men work or travel in mines shall be improved when:\n(1) It contains less than nineteen and five-tenths percent oxygen;\n(2) It contains more than one-hundredth percent carbon monoxide;\n(3) It contains more than five-tenths percent carbon dioxide;\n(4) It contains more than one percent methane; or\n(5) Is contaminated with dust or with noxious or poisonous gases in excess of accepted limits as established by the director of the division of mine inspection.","path":["Title XVIII - LABOR AND INDUSTRIAL RELATIONS","Chapter 293 - Mining Regulations"],"source_url":"https://revisor.mo.gov/main/OneSection.aspx?section=293.120","current_through":"2026 legislative session (floor)","vintage":"","retrieved_at":"2026-09-03T22:23:27Z","sha256":"3628abb1281b1128a70d810a258a74091eaf2540e2e19823337db82b1545cc13","source_id":"us-mo","stale":false,"prev":"us-mo/mo.-rev.-stat.-293.110","next":"us-mo/mo.-rev.-stat.-293.130"},"notice":"GroundRules: Original legal text. Not legal advice."}