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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Sep 16, 2025
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Title 30
Chapter I
Part 33 - PART 33—DUST COLLECTORS FOR USE IN CONNECTION WITH ROCK DRILLING IN COAL MINES
Subpart A [§ 33.1 - § 33.13] - Subpart A—General Provisions
Subpart B [§ 33.20 - § 33.23] - Subpart B—Dust-Collector Requirements
Subpart C [§ 33.30 - § 33.38] - Subpart C—Test Requirements
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