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Mitigating coal dust explosions in modern underground coal mines.

Authors
Harris-ML; Cashdollar-KL; Man-C-K; Thimons-E
Source
Mine Ventilation: Proceedings of the Ninth International Mine Ventilation Congress, New Delhi, India, November 10-13, 2009. Panigrahi DC, ed., New Delhi, India: Oxford & IBH Publishing Co. Pvt. Ltd., 2009 Nov; 1:143-149
Link
NIOSHTIC No.
20036214
Abstract
The National Institute for Occupational Safety and Health (NIOSH), as part of its continuing research program for evaluating coal dust explosion hazards, has investigated several areas in which current practices may need to be updated in order to adequately protect mines against coal dust propagated explosions. In the United States, current rock dusting requirements remained largely unchanged since 1969. US Title 30 Code of Federal Regulations Section 75.403 is based on a coal dust particle size survey performed in the 1920s and later was supplemented by full-scale testing of the rock dust ability to inert a coal dust explosion. NIOSH recently conducted a comprehensive survey of US underground coal mines to determine the range of coal particle sizes found in dust samples collected from the mine entries. Due to advancements in technology and modern coal mining techniques, the current coal dust particles in intake airways are significantly finer than those found in the mines in the 1920s. According to past full-scale dust explosion test results, the current rock dusting practices used in today's mines to inert a coal dust explosion may not be adequate. Other closely related issues such as rock dust testing methods and sampling procedures are discussed.
Keywords
Coal-dust; Coal-miners; Coal-mining; Coal-workers; Control-technology; Dust-measurement; Dust-particles; Dust-sampling; Engineering-controls; Explosion-protection; Explosions; Mine-seals; Mining-industry; Particle-aerodynamics; Particulate-dust; Underground-mining; Author Keywords: Explosion; coal; mining; coal dust; rock dust; particle size
Contact
Marcia L. Harris, NIOSH - Pittsburgh Research Laboratory, P.O. Box 18070,626 Cochrans Mill Rd. Pittsburgh, PA 15236
Publication Date
20091101
Document Type
Conference/Symposia Proceedings
Email Address
mharris@cdc.gov
Editors
Panigrahi-DC
Fiscal Year
2010
NTIS Accession No.
NTIS Price
ISBN No.
9788120417496
NIOSH Division
PRL
Priority Area
Mining
Source Name
Mine Ventilation: Proceedings of the Ninth International Mine Ventilation Congress, New Delhi, India, November 10-13, 2009
State
PA
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