Reducing enclosed cab drill operator's respirable dust exposure at a surface coal operation using a retrofitted filtration and pressurization system.
Cecala AB; Organiscak JA; Heitbrink WA; Zimmer JA; Fisher T; Gresh RE; Ashley JD
Trans Soc Min Metall Explor 2003 Dec; 314:31-36
The mobile equipment used in surface coal mining often has enclosed cabs to protect equipment operators. The overburden removal process is extremely dusty and can cause excessive exposure to respirable dust, especially crystalline silica. After the equipment has been used for years, many components of the enclosure deteriorate, and its effectiveness is greatly reduced. This paper discusses a cooperative research study performed on an Ingersoll Rand DM45E surface drill, retrofitted with a new Sigma pressurization and filtration system. Respirable dust concentrations in the drill cab were substantially reduced from 0.64 milligrams per cubic meter during pretesting to 0.05 milligrams per cubic meter during posttesting with the new system, a 92% reduction. This new system seems to be a very well built and sturdy device that is well suited for the mining industry.
Mining-equipment; Respirable-dust; Dusts; Surface-mining; Coal-mining; Equipment-operators; Silica-dusts; Health-hazards; Occupational-hazards; Dust-exposure; Enclosed-cabs; Filtration; Dust-sampling; Dust-measurement; Drill-operators
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
Transactions of the Society for Mining, Metallurgy, and Exploration
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University of Iowa