Telephone service; installation
Sec. 7. (A) Telephone service or equivalent two-way
communication facilities shall be provided between the top and each
landing of main shafts and slopes and in all mines between the
surface and each working section that is more than 1,500 feet from
the main portal.
(B) Telephone lines, other than cables, shall be carried on
insulators, installed on the opposite side from power or trolley wires,
and where they cross power or trolley wires, they shall be insulated
adequately.
(C) Lightning arresters shall be provided at the points where
telephone circuits enter the mine. Mine telephone extensions in
surface buildings shall be provided with a lightning arrester for each
circuit entering the building.
(D) If a communication system other than telephones is used and
its operation depends entirely upon power from the mine electric
system, means shall be provided to permit continued communication
in event the mine electric power fails or is cut off; Provided,
however, That where trolley phones and telephones are both used an
alternate source of power for trolley phones is not required.
(Formerly: Acts 1955, c.168, s.74.)
Last modified: May 27, 2006