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U.S. Mine Ventilation Symposium

Air Changes; Slate; Strip and Block Saws; Chimney Fan; Silica; Respirable Dust

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Control Of Silica Dust In Slate Milling Operations, Karl T. Ahlen, Robert A. Haney, Joseph M. Denk Jun 1999

Control Of Silica Dust In Slate Milling Operations, Karl T. Ahlen, Robert A. Haney, Joseph M. Denk

U.S. Mine Ventilation Symposium

The Mine Safety and Health Administration (MSHA) conducted a study to assess the present state of technology used for controlling employees' respirable silica-bearing dust exposures during dimension slate milling operations. For this study, twelve slate milling operations were visited and various measurements were taken and observations made. These measurements and observations included exhaust and room airflow, types of enclosures, water usage, and building volumes for each of the milling processes. These mills usually employed between five and twenty people. From the study, general guidelines were developed from the best practices observed and can be used at the various sawing, splitting ...