MSHA - Code of Federal Regulations - 30 CFR 20.7
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MSHA - Title 30 CFR
30 CFR § 20.7
Specific requirements.


Two general classes of electric lamps are recognized in these requirements, namely: Class 1, those that are self-contained and easily carried by hand, and class 2, those that may or may not be self-contained and not so readily portable as the first class.

(a) Class 1. Class 1 includes hand lamps, signal lamps, inspection lamps, flashlights, and animal lamps which are operated by small storage batteries or dry cells.

(b) Class 2. Class 2 includes lamps such as the pneumatic-electric types and large battery lamps.