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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 74
Subpart B - Subpart B—Approval Requirements for Coal Mine Dust Personal Sampler Unit
§ 74.3 - Sampler unit.
§ 74.4 - Specifications of sampler unit.
§ 74.5 - Tests of coal mine dust personal sampler units.
§ 74.6 - Quality control.
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