30 C.F.R. § 75.703-1 Approved method of grounding.
Title 30 - Mineral Resources
In instances where the metal frames both of an offtrack direct-current machine and of the metal frames of its component parts are grounded to the same grounding medium the requirements of §75.703 will be met.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart H—Grounding
§ 75.703-1 Approved method of grounding.

