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Preliminary performance predictions for electromagnetic through-the- earth mine communications.

Authors
Bureau of Mines
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR-16-73, :1-58
NIOSHTIC No.
10001475
Abstract
This report comprises three working memoranda that present preliminary performance estimates for baseband voice and narrowband through-the-earth electromagnetic communications systems of principal interest to the Bureau of Mines for operational/emergency mine communications. The calculations were prepared to obtain early indications of the feasibility and governing parameters of such communications systems. They are based on limited but pertinent coal mine electromagnetic noise data acquired to date by Bureau contractors and on theoretical signal-attenuation characteristics for two transmitter antenna types of interest to the Bureau.
Keywords
Mine-gases; Mining-industry; Methanes; Methane-drainage; Methane-control; Explosive-gases; Explosive-atmospheres; Underground-mining; Coal-mining; Control-technology; Engineering-controls
CAS No.
74-82-8
Publication Date
19720101
Document Type
CP; Final Contract Report
Fiscal Year
1972
NTIS Accession No.
PB-217502/4
NTIS Price
A05
Identifying No.
OFR-16-73
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR-16-73
State
PA
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