MSHA - Code of Federal Regulations - 30 CFR 75.519
Skip to content
MSHA - Title 30 CFR
30 CFR § 75.519
Main power circuits; disconnecting switches.


[STATUTORY PROVISION]

In all main power circuits, disconnecting switches shall be installed underground within 500 feet of the bottoms of shafts and boreholes through which main power circuits enter the underground area of the mine and within 500 feet of all other places where main power circuits enter the underground area of the mine.