{"data":{"id":"us/30-cfr-18.22","jurisdiction":"us","citation":"30 CFR 18.22","heading":"Boring-type machines equipped for auxiliary face ventilation.","body":"Each boring-type continuous-mining machine that is submitted for approval shall be constructed with an unobstructed continuous space(s) of not less than 200 square inches total cross-sectional area on or within the machine to which flexible tubing may be attached to facilitate auxiliary face ventilation.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER B—TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS","PART 18—ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES","Subpart B—Construction and Design Requirements"],"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":"8e2b65ac0cb2129397ad385cdb7814d742c08a69047bff24b60702b020ea3d87","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-18.21","next":"us/30-cfr-18.23"},"notice":"GroundRules: Original legal text. Not legal advice."}