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Research and development contract for coal mine communication system. Volume 3 - theoretical data base.

Authors
Laubengayer-WC; Ware-KM; Gehring-RD; Wilson-LR; Decker-RP; Anderson-DT
Source
Washington, DC: U.S. Department of the Interior, Bureau of Mines, Contract H0232056, 1974 Nov; 3:1-187
NIOSHTIC No.
10001395
Abstract
Eight coal mines were visited to determine their communications usage and requirements. Presently available equipment was surveyed and evaluated to determine its applicability to the needs of the mines. The requirements, as determined from the surveys, and the capabilities, as determined from analysis and experiments, were summarized. Volume 3 contains all information used in predicting the performance of low-frequency transmissions in through-the-earth systems, along with the predictions themselves for typical situations.
Keywords
Mining-industry; Mining-equipment; Underground-mining; Coal-mining
Publication Date
19741115
Document Type
CP; Final Contract Report
Funding Type
Contract
Fiscal Year
1975
NTIS Accession No.
PB-244899
NTIS Price
A10
Identifying No.
OFR 69(3)-75; Contract-H0232056
NIOSH Division
PRC
Source Name
Washington, DC: U.S. Department of the Interior, Bureau of Mines, Contract H0232056
State
IA; DC; PA
Performing Organization
Collins Radio Company
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