C.F.R. » Title 30 » CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR › SUBCHAPTER O—COAL MINE SAFETY AND HEALTH › PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES › Subpart F—Electrical Equipment—General

30 C.F.R. § 75.508-1

Mine tracks

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When mine track is used as a conductor of a trolley system, the location of such track shall be shown on the map required by § 75.508, with a notation of the number of rails and the size of such track expressed in pounds per yard.