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Performance of a light-scattering dust monitor in underground mines
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2005
Source: 2005 SME Annual Meeting, February 28 - March 2, Salt Lake City, Utah, preprint 05-69. Littleton, CO, Society for Mining, Metallurgy, and Exploration, Inc., 2005 Feb; :1-5
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Description:The Thermo-MIE personal DataRAM dust monitor (pDR) is a light-scattering instrument approved for use in gassy underground mines by the U.S. Mine Safety and Health Administration (MSHA). However, the use of light-scattering monitors has been inhibited by concerns about inaccurate readings resulting from changes in dust size distribution and composition, as well as concerns about the impact of moisture in the mine air. Because of this concern, the National Institute for Occupational Safety and Health (NIOSH) evaluated the pDR using available data from laboratory tests and mine surveys. The data show that accuracy can vary widely from test to test and mine to mine. In most cases, the results can be improved by using a companion gravimetric measurement to adjust the pDR data.
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