In all mines operated in the State where a depth of more than five hundred feet underground has been reached, a telephone system shall be established, equipped and maintained by the owners or lessees of the mine with stations at each working level below the depth aforesaid, communicating with a station on the surface of the mine.
Mining IndustriesUnderground Telephones
Section § 7500
If a mine is deeper than 500 feet, the mine's owner or lessee must set up and maintain a telephone system. This system should have stations on each working level below 500 feet, connecting to the surface.
mine safety regulations telephone system in mines underground communication
Section § 7501
If an owner or renter does not install or take care of a required telephone system, it's considered a misdemeanor, which is a type of crime.
The failure or refusal of any owner or lessee to install or maintain such telephone system is a misdemeanor.
telephone system requirement misdemeanor offense owner responsibility
