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Results 11 - 20 of 28
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7/1/2008 - Conference papersThis paper describes and evaluates an engineering noise control for the roof bolting machine, namely the collapsible drill steel enclosure.
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10/1/2007 - Peer reviewed journal articlesDuring a recent NIOSH field evaluation of a newly designed filtration and pressurization system for an enclosed cab of a surface drill, it was determined that the drill operator's respirable-dust exposure was significantly increased during time periods ...
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5/1/2007 - Peer reviewed journal articlesThis paper summarizes a NIOSH investigation of engineering noise controls to reduce sound levels in cabs on air-rotary drill rigs. Results revealed that some drillers are exposed to A-weighted sound levels exceeding 85 dB even though a cab is used.
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1/1/2006 - Peer reviewed journal articlesNIOSH initiated a study of a roof bolter to reduce noise exposure to mine roof bolter operators. When drilling into granite, it was found that wet drilling generated lower sound power levels and performed better than vacuum drilling.
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1/1/2005 - Peer reviewed journal articlesDiscusses a cooperative research effort to lower respirable dust levels in an enclosed cab on an older surface drill at a silica sand operation. A number of modifications were incorporated into the drill's filtration and pressurization system, as well a...
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11/1/2004 - Information CircularsThis instructor's manual supplements the Wearing Hearing Protection Properly 3-D training reel. It offers tips on using the reel as a training aid, assessing training needs, and discussion notes that provide additional information to the user.
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7/1/2002 - Reports of InvestigationsThe process of drilling and bolting the roof is currently one of the most dangerous jobs in underground mining, resulting in about 1,000 accidents with injuries each year in the United States. Researchers from the Spokane Research Laboratory of the Nat...
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2/1/2002 - Conference papersThis report discusses a cooperative research study performed on a surface drill retrofitted with a new pressurization and filtration system. Respirable dust concentrations were substantially reduced from 0.64 mg/m3 during pre-testing to 0.05 mg/m3 duri...
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9/1/2001 - Peer reviewed journal articlesThe objectives of this work are to 1) evaluate the performance of the P7 method on field samples of low quartz mass loadings, 2) evaluate the magnitude of dust mass spatial variability within an enclosed cab environment, and 3) estimate the subsequent p...
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7/1/2001 - Peer reviewed journal articlesA number of ignition incidents involving mining and farm equipment have illustrated the surprising danger of drilling, cutting, or otherwise penetrating sealed compartments or frames that are filled with metal scrap for ballast.
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Content source: National Institute for Occupational Safety and Health, Mining Program