Code of Federal Regulations · Section
§ 84.138 — Head Harnesses; Minimum Requirements
42 C.F.R. § 84.138
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Facepieces shall be equipped with adjustable and replaceable head harnesses which are designed and constructed to provide adequate tension during use, and an even distribution of pressure over the entire area in contact with the face.
Authorizing Statute
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Duties of United States Bureau of Mines30 U.S.C. § 3