C.F.R. » Title 30 » CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR › SUBCHAPTER O—COAL MINE SAFETY AND HEALTH › PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES › Subpart I—Surface High-Voltage Distribution

30 C.F.R. § 77.807-2

Booms and masts; minimum distance from high-voltage lines

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The booms and masts of equipment operated on the surface of any coal mine shall not be operated within 10 feet of an energized overhead powerline. Where the voltage of overhead powerlines is 69,000 volts, or more, the minimum distance from the boom or mast shall be as follows:

Nominal power line voltage (in 1,000 volts)Minimum distance (feet)
69 to 11412
115 to 22915
230 to 34420
345 to 49925
500 or more35
Notes of Decisions
Cited in 1 case, 1985–1985 · leading case: Old Dominion Power Co. v. Donovan, 772 F.2d 92 (4th Cir. 1985).
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Old Dominion Power Co. v. Donovan, 772 F.2d 92 (4th Cir. 1985). “For example, MSHA requires at least a ten-foot clearance between an energized overhead power line and the booms and masts of equipment operated on the surface of a coal mine, 30 C.F.R. § 77.807-2 . OSHA, on the other hand, permits electric utility employees and equipment to move…”
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