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Technical Services for Mine Communications Research. Commercially Available Equipment for Coal Mine Emergency Warning Systems.

Authors
Foulkes-JD; Lagace-RL; Welz-AW
Source
NTIS: PB/272-459 Available for Reference At Bureau Libraries :77 pages
Link
NIOSHTIC No.
10001380
Abstract
An investigation was made to determine whether commercially available equipment could be used to engineer effective emergency warning systems for underground coal mines. The Bureau of Mines and the Mining Enforcement and Safety Administration established that the preferred system should operate over the existing pager phone twisted pair and broadcast an audio alarm. Applicable equipments such as voice band tone signaling equipment, alarm sounding equipment, mine telephones, and complete alarm systems from over 30 manufacturers are listed. Factors affecting the range over which an alarm could be detected in representative mine situations were studied. Audio alarm systems meeting the requirements can be installed and representative systems are described.
Publication Date
19760101
Document Type
CP; Final Contract Report;
Fiscal Year
1976
NTIS Accession No.
PB-272459
NTIS Price
A06
Identifying No.
OFR 137-77
NIOSH Division
PRC;
Source Name
NTIS: PB/272-459 Available for Reference At Bureau Libraries
Performing Organization
A. D. Little, Inc.
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