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Vehicular communications 2500 feet underground.

Authors
Chufo-RL
Source
IEEE Vehicular Technology Conf Orlando Florida 1977 Mar; :45 pages
Link
NIOSHTIC No.
10001410
Abstract
An underground communications system has been installed in Bethlehem Mines Corp.'s Grace Iron Mine. The system provides communications for trackless vehicles and roving personnel without the requirement for a dispatcher. UHF/VHF repeaters are combined with coaxial "leaky-feeder" and twin-lead transmission line to form an operational and emergency communication network not previously found in mine communication systems. Key functions are evacuation alarming, personnel paging, and communications with maintenance personnel and the underground ambulance.
Publication Date
19770301
Document Type
OP; Conference/Symposia Proceedings
Fiscal Year
1977
NTIS Accession No.
NTIS Price
Identifying No.
OP 42-77
NIOSH Division
PRC
Source Name
IEEE Vehicular Technology Conf Orlando Florida
State
FL; PA
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