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- Document types:
- Reports of Investigations
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Results 11 - 20 of 22
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5/1/1998 - Reports of InvestigationsFull-scale testing and results are described for an automated system that continuously monitors the accumulation of coal dust in mine entries.
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1/1/1993 - Reports of InvestigationsThe design and evaluation of two total mill ventilation systems are described. Both systems proved to be very effective at reducing respirable dust levels in a cost-effective manner, were easy to install, and required minimal maintenance.
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4/1/1992 - Reports of InvestigationsA collaboration between the U.S. Bureau of Mines and Michigan Technological University to develop an apparatus for measuring diesel tailpipe emissions in underground mines.
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1/1/1992 - Reports of InvestigationsDust surveys were conducted to determine factors affecting belt entry dust levels and how using belt air to ventilate work areas affected dust exposures.
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1/1/1992 - Reports of InvestigationsThis report is mainly about a ferrocene-based additive that reduced DPM between 4 and 45 pct, depending on engine operating conditions.
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1/1/1992 - Reports of InvestigationsThe U.S. Bureau of Mines investigated the relationship of bituminous coal seam parameters and the amount of respirable dust generated at longwalls.
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1/1/1988 - Reports of InvestigationsThe Bureau of Mines has developed a system using a high-speed electropneumatic mechanism for the rapid (grab) sampling of dusts and gases during an explosion to monitor pyrolysis-charring in coal particles and combustion of pyrolysis vapors.
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1/1/1986 - Reports of InvestigationsThe Bureau of Mines performed laboratory experiments to evaluate the triboelectric effect of particulate-laden gas streams on polyethylene pipe at various velocity, humidity, dust-size, and dust-load conditions.
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1/1/1983 - Reports of InvestigationsIn Europe, water infusion is used widely to reduce generation of respirable dust during mining. Its use in the United States is limited to a few plow operations in the Pocahontas No. 3 Coalbed. This Bureau of Mines report describes the technology for in...
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1/1/1974 - Reports of InvestigationsThe periphery of longwall panels in the Pocahontas No. 3 Coalbed is characterized by a zone of reduced permeability that inhibits the natural drainage of methane. However, natural drainage holes drilled during development have been found to reduce the g...
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Content source: National Institute for Occupational Safety and Health, Mining Program