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Mining Publication: A Study of RF Hazards at Low and Medium Frequencies to Blasting in Underground Coal Mines
Keywords: Blasting Explosives safety
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: September 1985
Authors: RH Thompson, JG Stuart, WW Cipkins
Contract/MOA Report - September 1985
Download PDF Document (7.62 MB)
NIOSHTIC2 Number: 10005910
Franklin Research Center. U.S. Department of the Interior, Bureau of Mines, Contract No. J0318023. NTIS No. PB 88-130097, 1985; :1-313
This paper presents the preliminary safe distances for blasting wiring from typical electromagnetic sources. The distances are for underground coal mines and electromagnetic sources in the frequency range below 10 mhz. The distances are based on measurements performed at three locations in each of three coal mines. The measurement apparatus, measurement procedure, measurement results, and the rationale used in the calculation of the safe distances are all described. The safe distances presented are dependent on the measurement results and their interpretation. More measurements are clearly necessary to establish the validity of the suggested distances.
Image of publication A Study of RF Hazards at Low and Medium Frequencies to Blasting in Underground Coal MinesContract/MOA Report - September 1985
Download PDF Document (7.62 MB)
NIOSHTIC2 Number: 10005910
Franklin Research Center. U.S. Department of the Interior, Bureau of Mines, Contract No. J0318023. NTIS No. PB 88-130097, 1985; :1-313
See Also
Blast Wave Propagation in Underground Mines
A Century of Bureau of Mines/NIOSH Explosives Research
Fatal Accidents Due to Flyrock and Lack of Blast Area Security and Working Practices in Mining
A Gas Pressure-Based Drift Round Blast Design Methodology
Low Temperature Limits for Mixing Recycled Oil, Diesel Fuel, and Ammonium Nitrate to Make ANFO-Type Blasting Agents
Pressure Monitoring and Observed Effects of Mining at the Oak Grove, AL, Coalbed Degasification Pattern
Safe Distances for Blasting Wiring from Commonly Encountered Underground Electromagnetic Energy Sources
A Summary of Fatal Accidents Due to Flyrock and Lack of Blast Area Security in Surface Mining, 1989 to 1999
Technology News 522 - Blast Area Security: Flyrock Safety
Toolbox Training on Flyrock Awareness
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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