Code of Federal Regulations · Section
§ 84.96 — Service Time Test; Closed-circuit Apparatus
42 C.F.R. § 84.96
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(a) The closed-circuit apparatus will be classified according to the length of time it supplies adequate breathing gas to the wearer during man test No. 4 described in Table 4 of this subpart.
(b) The service time obtained on man test No. 4 will be used to classify the closed-circuit apparatus in accordance with § 84.53.
Authorizing Statute
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Duties of United States Bureau of Mines30 U.S.C. § 3