MSHA - Code of Federal Regulations - 30 CFR 7.41
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MSHA - Title 30 CFR
30 CFR § 7.41
Purpose and effective date.

This subpart establishes the specific requirements for MSHA approval of battery assemblies intended for incorporation in approved equipment in underground mines. It is effective August 22, 1988. Applications for approval or extensions of approval submitted after August 22, 1989, shall meet the requirements of this part.