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Mining Publication: Safe Distances for Blasting Wiring from Commonly Encountered Underground Electromagnetic Energy Sources
Keywords: Blasting Coal mining Explosives safety Underground mining
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 1983
Authors: RH Thompson
Contract/MOA Report - September 1983
Download PDF Document (2.26 MB)
NIOSHTIC2 Number: 20030897
The Franklin Institute. U.S. Department of the Interior, Bureau of Mines, Contract No. J0328023, 1983; :1-77
The use of electromagnetic field producing equipment in underground coal mining operations can only be expected to grow. The use of these equipment in underground mining operations is hampered by the possibility of their electromagnetic fields interacting with the electric blasting cap operations commonly carried out in the mines. Such interactions can have at least two results bearing directly on mine safety: premature initiation of the cap, either in its normal shot location or during hookup or transportation; and dudding of the cap so that normal firing operations do not cause irritation, thereby leaving unexploded high explosives after normal firing. The experimental work on this project was directed to determining the magnetic field field distribution around typical underground current carrying conductor configurations.
Image of publication Safe Distances for Blasting Wiring from Commonly Encountered Underground Electromagnetic Energy SourcesContract/MOA Report - September 1983
Download PDF Document (2.26 MB)
NIOSHTIC2 Number: 20030897
The Franklin Institute. U.S. Department of the Interior, Bureau of Mines, Contract No. J0328023, 1983; :1-77
See Also
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Progress Toward Improved Engineering of Seals and Sealed Areas of Coal Mines
Refuge Alternatives in Underground Coal Mines
Safe and Economical Inerting of Sealed Mine Areas
SPONCOM - A Computer Program for the Prediction of the Spontaneous Combustion Potential of an Underground Coal Mine
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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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