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Mining Publication: Electromagnetic Noise in Itmann Mine
Keywords: Coal mining Data collection and recording Statistical analysis
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 1974
Authors: WD Bensema, M Kanda, JW Adams
Contract/MOA Report - September 1974
Download PDF Document (3.79 MB)
NIOSHTIC2 Number: 10001381
U.S. Department of the Interior, Bureau of Mines, Contract No. HO133005. NTIS No. Com/741-1718, 1974; :1-103
Two different techniques were used to make measurements of the absolute value of electromagnetic noise in an operating coal mine, Itmann No. 3 Mine, located near Mullens, West Virginia. The electromagnetic environment created by 250-volt dc and 550- and 950-volt ac machinery in two longwall panels was measured and is reported. One technique measures noise over the entire electromagnetic spectrum of interest for brief time periods. It is recorded using broadband analog magnetic tape, and the noise data is later transformed to give spectral plots. The other technique records noise amplitudes at several discrete frequencies for a sufficient amount of time to provide amplitude probability distributions. The specific, measured results are given in a number of spectral plots and amplitude probability distribution plots.
Image of publication Electromagnetic Noise in Itmann MineContract/MOA Report - September 1974
Download PDF Document (3.79 MB)
NIOSHTIC2 Number: 10001381
U.S. Department of the Interior, Bureau of Mines, Contract No. HO133005. NTIS No. Com/741-1718, 1974; :1-103
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Frictional Ignitions in Underground Bituminous Coal Operations 1983-2005
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Peak Methane Concentrations During Coal Mining: An Analysis
Refuge Alternatives in Underground Coal Mines
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Surveillance of Disaster - A View From the Denominator
Time and Amplitude Statistics for Electromagnetic Noise in Mines
Wireless Mesh Mine Communication System
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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