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ECFR SNAPSHOT / CURRENT THROUGH 2026-08-19

30 CFR 75.508

Map of electrical system.

CHAPTERCHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
PARTPART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
SUBPARTSubpart F—Electrical Equipment—General

CURRENT PUBLIC TEXT

[Statutory Provisions]

The location and the electrical rating of all stationary electric apparatus in connection with the mine electric system, including permanent cables, switchgear, rectifying substations, transformers, permanent pumps, and trolley wires and trolley feeder wires, and settings of all direct-current circuit breakers protecting underground trolley circuits, shall be shown on a mine map. Any changes made in a location, electric rating, or setting shall be promptly shown on the map when the change is made. Such map shall be available to an authorized representative of the Secretary and to the miners in such mine.