Code of Federal Regulations · Section
§ 84.51 — Entry And Escape, Or Escape Only; Classification
42 C.F.R. § 84.51
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Respirators described in subparts H through L of this part shall be classified for use as follows:
(a) Entry and escape. Respirators designed and approved for use during entry into a hazardous atmosphere, and for escape from a hazardous atmosphere; or
(b) Escape only. Respirators designed and approved for use only during escape from a hazardous atmosphere.
Authorizing Statute
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Duties of United States Bureau of Mines30 U.S.C. § 3