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Results 41 - 50 of 82
7/1/2008 - Conference papersThis paper describes and evaluates an engineering noise control for the roof bolting machine, namely the collapsible drill steel enclosure.
Laboratory and Field Evaluation of Dust Collector Bags for Reducing Dust Exposure of Roof Bolter Operators7/1/2008 - 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.
Practical Application of a Partial Cab to Reduce the A-Weighted Sound Level at the Operator's Station on Surface Drill Rigs12/1/2007 - 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.
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.
Closing the Door to Dust When Adding Drill Steels: Uni-directional Cab Filtration and Pressurization System Tested10/1/2007 - 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 ...
Water Separator Shows Potential for Reducing Respirable Dust Generated on Small-Diameter Rotary Blasthole Drills9/1/2007 - 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...
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.
Technology News 525 - NIOSH Releases New Skills Training Aid: Walk-Thru Roof Bolting Machine Trainer's Guide6/1/2007 - Technology NewsNIOSH has released a new report entitled "Roof Bolting Machine Operators Skills Training for a Walk-Thru Roof Bolter: Trainer's Guide" (IC 9489). It is designed to help safety trainers develop structured training for new operators of walk-thru bolting m...
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.
Technology News 523 - Evaluation of Dust Collector Bags for Reducing Dust Exposure of Roof Bolter Operators2/1/2007 - Technology NewsObjective: To evaluate the effectiveness of dust collector bags for reducing dust liberation from a roof bolter dust collection system.