CFR›Title 30›Chapter I›Part 74›Subpart C ContainsSections 74.7–74.11CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart C—Requirements for Continuous Personal Dust Monitors Sections 74.7 § 74.7 Design and construction requirements. 74.8 § 74.8 Measurement, accuracy, and reliability requirements. 74.9 § 74.9 Quality assurance. 74.10 § 74.10 Operating and maintenance instructions. 74.11 § 74.11 Tests of the continuous personal dust monitor. Previous B Subpart B—Approval Requirements for Coal Mine Dust Personal Sampler Unit Next D Subpart D—General Requirements for All Devices