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- Equipment, tools, and parts:
- Drills
- Document types:
- Peer reviewed journal articles
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Results 1 - 10 of 12
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3/1/2011 - Peer reviewed journal articlesField tests confirm that an air-blocking shelf installed in the inside perimeter of a blasthole drill shroud substantially improves dust control. This modification reduced respirable dust by 66%–81% in the immediate vicinity of the shroud...
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1/1/2012 - Peer reviewed journal articlesThis paper documents the evolution of the bit isolator and chuck isolator. Laboratory testing confirms that production bit and chuck isolators reduce the A-weighted sound level generated during drilling by 3.7 to 6.6 dB.
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1/1/2010 - Peer reviewed journal articlesThis study tests the ability of a new air nozzle system, located under the drill deck shroud, to improve the dust capture of the drill deck shroud.
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12/1/2008 - Peer reviewed journal articlesThis paper describes a recent research project initiated by NIOSH which identified improvement of the drill shroud design as one of its main objectives for reducing the exposure of surface miners to respirable dust.
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9/1/2008 - Peer reviewed journal articlesThe focus of this work is drill shroud dust leakage and the relationships of various drill parameters on this leakage.
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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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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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Content source: National Institute for Occupational Safety and Health, Mining Program