Mining Publication: Research on the Transmission of Electromagnetic Signals Between Mine Workings and the Surface

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Original creation date: January 1974

Authors: RG Geyer, GV Keller, T Ohya

Contract/MOA Report - January 1974

NIOSHTIC2 Number: 10001486

Colorado School of Mines. U.S. Bureau of Mines Contract No. H0101691: NTIS No. PB-237852, 1974 Jan; :1-124

Field studies (Contract No. H0101691) of ambient electromagnetic noise and electrical transmission properties of coal mine overburdens in Colorado, Illinois, Pennsylvania, and West Virginia were conducted. Field tests of the transmission of low-frequency (20 hz to 20,000 hz) signals by vertical axis loops and horizontal wire antenna were made and compared with theoretical predictions. Implications of the field tests for the design of an electromagnetic system to locate trapped miners are discussed.

Image of publication Research on the Transmission of Electromagnetic Signals Between Mine Workings and the Surface
Contract/MOA Report - January 1974

NIOSHTIC2 Number: 10001486

Colorado School of Mines. U.S. Bureau of Mines Contract No. H0101691: NTIS No. PB-237852, 1974 Jan; :1-124


Page last reviewed: 9/21/2012 Page last updated: 9/21/2012