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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Sep 16, 2025
All Titles
Title 30
Chapter I
Part 33
Subpart B - Subpart B—Dust-Collector Requirements
§ 33.20 - Design and construction.
§ 33.21 - Modification of test equipment.
§ 33.22 - Mode of use.
§ 33.23 - Mechanical positioning of parts.
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