Details:

Personal Author:
Isberg, R. A. ; Kramer, H. ; Parrish, D. A
Isberg, R. A. ; Kramer, H. ; Parrish, D. A Less -
Corporate Authors:
Comsul Ltd. ; .United States. Bureau of Mines.Pittsburgh Research Center (U.S.)
Comsul Ltd. ; .United States. Bureau of Mines.Pittsburgh Research Center (U.S.) Less -
Description:
"This report describes the design and implementation of radio and closed-circuit television systems in the Black River room-and-pillar limestone mine near Butler, Pendleton County, Kentucky. Prior to designing the radio system, measurements of signal attenuation on 812 and 466 mhz were made in the slope tunnel and in the straight and level crosscuts in the mine. Two distributed antenna systems fed by two sets of base stations provide approximately 75 pct coverage of the mine. Passive reflectors were used for extending signals into intersecting crosscuts and two-way signal boosters will be used to extend signals to the perimeter and obstructed areas of the mine. Fourteen mine vehicles were equipped with mobile radios with digital identification, alarm, and status encoders. Fifteen portable transceivers also were used. Six closed-circuit television cameras provide surveillance of critical transfer points of the belt conveyor system, the loading dock at the base of the slope, and an ash disposal area in the mine. Two-way radio communication and closed-circuit television have saved considerable work hours, increased production, reduced maintenance costs, and enhanced safety." - NIOSHTIC-2

NIOSHTIC no. 10002199


Subject:
[+]
Closed-circuit Television.
Mine Communication Systems.
Radio In Mining.
Shortwave Radio.

Series:
Open file report (United States. Bureau of Mines) ; 131-81
Document Type:
Report
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:a75a92b6f8b842430b17f94f152bf3899bf42be6e446aadb0dfd8988bda43423
File Type:

Supporting Files

• No Additional Files

More +