The diesel fraction of respirable dust in underground diesel coal mines.
Cocalis-J; McCwaley-M; Doyle-Coombs-D
Proceedings of the 18th Annual Institute on Coal Mining Health, Safety and Research, Blacksburg, Virginia, August 25-27, 1987. Faulkner G, Sutherland WH, Forshey DR, Lucas JR, eds., Blacksburg, VA: Virginia Polytechnic Institute and State University, 1987 Aug; :63-69
The particulate output from diesel equipment can be a major component of the respirable dust in coal mines. Based on measurements of diesel engine output in underground coal mines, Francart and Stoltz estimated the concentration of diesel particulate in respirable coal mine dust to range from 0.7 to 1.6 mg/m3. Measurements, made as part of this study of face area diesel concentration from sampling in mine diesel mines. ranged to 1.28 mg/m3. These levels can be significant when compared to the respirable coal mine dust standard of 2.0 mg/m3. This article summarizes the results from sampling undertaken as part of a joint National Institute for Occupational Safety and Health (NIOSH)-Bureau of Mines (BOM) project to develop a simple, inexpensive method for estimating the diesel fraction of respirable dust in coal mines. Aerosols are defined as solid or liquid particles suspended in a gas. Two categories of aerosol, that differ in aerodynamic size and can be found in underground diesel coal mines, are dusts and fumes. Because of their differing aerodynamic properties, dusts and fumes can be separated by size in cascade impactors. Dusts are aerosols that are formed by mechanical means. Examples include the crushing and grinding of rock and coal. In general, dusts have aerodynamic diameters larger than 1 micrometer (supermicrometer). In an all-electric underground coal mine sampled by Cantrell, over 90% of the respirable aerosol mass was supermicrometer. Burkhart reported similar aerosol size-distribution results for intake, face, haulageway, shuttlecar, and feeder breaker areas of continuous mining sections.
Mine-workers; Mineral-processing; Miners; Mining-industry; Coal-miners; Coal-mining; Coal-workers; Underground-miners; Underground-mining; Aerosol-particles; Aerosols; Dust-particles; Coal-dust; Fumes; Diesel-exhausts; Particulates
Faulkner-G; Sutherland-WH; Forshey-DR; Lucas-JR
Proceedings of the 18th Annual Institute on Coal Mining Health, Safety and Research, Blacksburg, Virginia, August 25-27, 1987