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Results 41 - 50 of 85
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12/1/2008 - Peer reviewed journal articlesThis work presents the findings from NIOSH field and laboratory studies comparing respirable dust levels on mist drilling roof bolter machines to dust levels measured on machines using a conventional vacuum drilling system.
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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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9/1/2008 - Technology NewsResearch conducted by NIOSH has focused on producing noise treatments to reduce noise generated by the Roof Bolting Machine. A drill steel enclosure for reducing roof bolting machine drilling noise has been developed as an engineering control.
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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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7/1/2008 - Peer reviewed journal articlesThis paper presents the results of NIOSH laboratory and field tests to evaluate the effectiveness of dust collector bags for reducing dust liberation and operator exposure from a roof bolter's dust collection system.
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12/1/2007 - Peer reviewed journal articlesThis paper discusses the results of a collaboration with a local drilling company to design and install a partial cab between the operator and the drill steel in an effort to reduce the sound level at the operator station of a surface drill rig.
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10/1/2007 - Conference papersThis paper evaluates the duty cycle of a typical roof bolting machine operation at two coal mines. The results provide insight into which portion of the operators’ duty cycle is the most prominent contributor to noise exposure.
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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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9/1/2007 - Peer reviewed journal articlesTests have been conducted by NIOSH on a newly designed device for smaller diameter drills that separates the water from the bailing air before it reaches the bit and thus provides the cost benefit of dry drilling while providing the benefit of wet drill...
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6/1/2007 - Conference papersThis paper discusses the application of digital human models to examine computer-generated forces necessary to move specific joysticks by using roof bolter virtual operators to predict the forces experienced on the operator's upper extremities.
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Content source: National Institute for Occupational Safety and Health, Mining Program