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Results 221 - 230 of 230
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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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1/1/1992 - 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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1/1/1986 - Information CircularsThe Bureau of Mines has recorded a number of different background dust sources that significantly contaminate the air breathed by bag machine operators. To keep bag operator exposure within acceptable dust levels established by the Mine Safety and Healt...
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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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12/8/2022 - PC softwareUse the Air Quantity Estimator to gauge the air quantity needed to dilute diesel particulate matter (DPM) in an underground large-opening mine. Now in 2.0!
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1/1/2012 - Guides and manuals, Reports of InvestigationsMined ore undergoes crushing, grinding, cleaning, drying, and product sizing as it is processed, generating harmful dust. This handbook reviews technologies for lowering dust levels below the permissible or recommended occupational exposure limits.
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3/1/2006 - Technology NewsA combination of engineering, administrative, and ventilation controls will eventually be required in many large opening mines in the United States to meet the regulatory DPM concentration limits. The AQE is a tool for mine planners to use to estimate s...
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Content source: National Institute for Occupational Safety and Health, Mining Program