{"data":{"id":"us/30-cfr-36.21","jurisdiction":"us","citation":"30 CFR 36.21","heading":"Engine for equipment considered for certification.","body":"Only equipment powered by a compression-ignition (diesel) engine and burning diesel fuel will be considered for approval and certification. The starting mechanism shall be actuated pneumatically, hydraulically, or by other methods acceptable to MSHA. Electric starting shall not be accepted. Engines burning other fuels or utilizing volatile fuel starting aids will not be investigated.","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 36—APPROVAL REQUIREMENTS FOR PERMISSIBLE MOBILE DIESEL-POWERED TRANSPORTATION EQUIPMENT","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":"49f3d2751622d4eb01e6fe53721c7dbcba0d262a34f5e5847c46a8dfc1cc234b","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-36.20","next":"us/30-cfr-36.22"},"notice":"GroundRules: Original legal text. Not legal advice."}