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Mining Publication: Electromagnetic Propagation in Low Coal Mines at Medium Frequencies
Keywords: Communications
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: January 1978
Authors: TS Cory
Contract/MOA Report - January 1978
Download PDF Document (2.47 MB)
NIOSHTIC2 Number: 10002377
Rockwell International. U.S. Bureau of Mines Contract No. H03777053. NTIS No. PB/82-202656, 1978; :1-94
This report covers magnetic field strength measurements versus range and frequency in low to medium coal mines. Both quasi-conductor-free and conductor-proximity areas were investigated. The program covered five mines, four seams, six measurement sets, and three geographic areas. The results are summarized in terms of maximum communication range expected per seam and noise condition. Scatter gain is further explored as a simple measure of energy coupled to conductors.
Image of publication Electromagnetic Propagation in Low Coal Mines at Medium FrequenciesContract/MOA Report - January 1978
Download PDF Document (2.47 MB)
NIOSHTIC2 Number: 10002377
Rockwell International. U.S. Bureau of Mines Contract No. H03777053. NTIS No. PB/82-202656, 1978; :1-94
See Also
Medium-Frequency Propagation in Coal Mines
Mine Communications and Tracking Glossary
Propagation of EM Signals in Underground Mines
Research and Development Contract for Coal Mine Communication System: Volume 2 - Mine Visits
Theoretical Noise and Propagation Models for Through-the-earth Communication
Theory on the Propagation of UHF Radio Waves in Coal Mine Tunnels
Through-The-Earth Wireless Real-Time Two-Way Voice Communications
Ultra-Low Frequency Through-the-Earth Communication Technology
Underground Mine Communications
Underground Mine Communications, Control and Monitoring
Page last reviewed: November 16, 2015
Page last updated: November 16, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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