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

Geyer, Richard G.; Keller, George V.; Ohya, Takashi

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

1974/01/01
By Geyer, Richard G. ; Keller, George V. ; Ohya, Takashi
Series: Mining Publications

File Language:

English

Details

Journal Article:

Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR 61-74
Personal Author:

Geyer, Richard G. ; Keller, George V. ; Ohya, Takashi
Description:

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. [Description provided by NIOSH]
Subjects:

Coal Coal Mining Engineering Explosions Methane Mining Occupational Health Safety
Keywords:

Mine-gases; Mining-industry; Methanes; Methane-drainage; Methane-control; Explosive-gases; Explosive-atmospheres; Underground-mining; Coal-mining; Control-technology; Engineering-controls
Source:

Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR 61-74, :1-124
Series:

Mining Publications
Document Type:

Text
Funding:

USBM contract no. H0101691
Genre:

Final Contract Report
Place as Subject:

Colorado ; Illinois ; OSHA Region 3 ; OSHA Region 5 ; OSHA Region 8 ; Pennsylvania ; West Virginia
CIO:

National Institute for Occupational Safety and Health (NIOSH)
Division:

PRC - Pittsburgh Research Center
Topic:

Workplace Safety & Health
Location:

North America
Pages in Document:

131 pdf pages
NIOSHTIC Number:

nn:10001486
NTIS Accession Number:

PB-237852
CAS Registry Number:

Methane (CAS RN 74-82-8)
Federal Fiscal Year:

1974
Peer Reviewed:

False
Collection(s):

National Institute for Occupational Safety and Health
Main Document Checksum:

urn:sha-512:fd7a34969b44f1604fd30f55d0111fbe4998be496eb8be96eabaee70416d36b73cb6e0645d097b4a8bc984b28f8ad8913b1ed32a00b2fdf518a375f9faf37fa4
Download URL:

https://stacks.cdc.gov/view/cdc/8838/cdc_8838_DS1.pdf
File Type:

[PDF - 2.69 MB ]

File Language:

English

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