30 C.F.R. § 77.704-11 Use of grounded messenger wires; ungrounded systems.
Title 30 - Mineral Resources
Solely for purposes of grounding ungrounded high-voltage power systems, grounded messenger wires used to suspend the cables of such systems may be used as a grounding medium.
Title 30: Mineral Resources
PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
Subpart H—Grounding
§ 77.704-11 Use of grounded messenger wires; ungrounded systems.
