Code of Federal Regulations · Section
§ 84.202 — Air Velocity And Noise Levels; Hoods And Helmets; Minimum Requirements
42 C.F.R. § 84.202
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Noise levels generated by the respirator will be measured inside the hood or helmet at maximum airflow obtainable and shall not exceed 80 dBA.
Authorizing Statute
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Duties of United States Bureau of Mines30 U.S.C. § 3