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 H—Grounding

30 C.F.R. § 75.706

Deenergized underground power circuits; idle days—idle shifts

Read at: eCFRecfr.gov CornellLII GovInfogovinfo.gov CasesGoogle Scholar
[Statutory Provisions]

When not in use, power circuits underground shall be deenergized on idle days and idle shifts, except that rectifiers and transformers may remain energized.