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Results 11 - 20 of 29
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5/1/2008 - Peer reviewed journal articlesThis article describes the results from analysis of open-face samples which suggest that the new formulations for PDM filters have fully addressed the analytical obstacles that existed with the original filter design.
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8/1/2007 - Peer reviewed journal articlesThis paper describes a simple, inexpensive, dependable, and field portable method for estimating the mass concentration of elemental carbon exiting the tailpipe of a diesel engine using a direct reading photometer in underground mines.
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4/1/2007 - Peer reviewed journal articlesThe objective of this paper is to compare the results among (1) a NIOSH published standard to determine the mass of EC and OC on filter samples, (2) the aethalometer, which uses light extinction to measure "black carbon" or BC, and (3) measuring particl...
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4/1/2007 - Peer reviewed journal articlesThis report describes an investigation in which NIOSH used iron-doped diesel fuel to generate metal-bearing diesel particles and a subsequent analysis of the particles using transmission electron microscopy (TEM) and energy-dispersive spectroscopy (EDS).
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8/1/2006 - Conference papersNIOSH conducted wet/dry immersion cycling of clay-rich rocks, which provides an accurate, quick and inexpensive method for estimating the moisture sensitivity of mudrocks. With this information mine operators can begin to anticipate hazardous ground.
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1/1/2005 - Peer reviewed journal articlesInvestigates the ability of the SKC DPM cassette to collect diesel particulate matter while segregating ore dust from the sample.
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5/1/2000 - Peer reviewed journal articlesAn experimental program was conducted to evaluate the accuracy of some current methods for predicting the flammability of gas mixtures containing hydrogen and flammable or nonflammable volatile organic compounds (VOCs) in air.
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1/1/2000 - Conference papersThis study reviewed 31 technical papers that analyze shear strengths for clay and sands containing rock particles. Results show that shear strength gradually increases with increasing percentages of floating particles in unsaturated clays.
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1/1/1992 - Reports of InvestigationsThe Bureau of Mines conducted Cu exchange tests for six common clays under simulated in situ leaching conditions. Regression equations were obtained from the data expressing the Cu exchange capacity as a function of Cu concentration, pH, and temperature.
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1/1/1992 - Information CircularsA U.S. Bureau of Mines investigation of Fourier transform infrared (FTIR) spectroscopy for on-filter analysis of respirable dust.
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Content source: National Institute for Occupational Safety and Health, Mining Program