{"data":{"id":"us/30-cfr-33.22","jurisdiction":"us","citation":"30 CFR 33.22","heading":"Mode of use.","body":"(a) A unit or system may be designed for use in connection with percussion and/or rotary drilling in any combination of the following drilling positions: (1) Vertically upward, (2) upward at angles to the vertical, (3) horizontally, and (4) downward.\n(b) Dust-collector units may be designed for use with specific drilling equipment or at specific drilling speeds.","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 33—DUST COLLECTORS FOR USE IN CONNECTION WITH ROCK DRILLING IN COAL MINES","Subpart B—Dust-Collector 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":"68c758cb52ec36cfed89443dfd22b4a491eb84f1213e13e3eef4d27c226ed924","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-33.21","next":"us/30-cfr-33.23"},"notice":"GroundRules: Original legal text. Not legal advice."}