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- Research methods and measures:
- Sound level
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Results 21 - 30 of 30
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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 - Conference papersThis paper discusses the methods NIOSH used to identify noise sources on a roof bolting machine while drilling.
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8/1/2007 - Peer reviewed journal articlesNIOSH completed a survey of equipment sound levels and worker noise exposures in the mining industry. The findings identify the equipment and machinery likely to cause worker overexposures and the workers found to be experiencing overexposures.
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7/1/2007 - Peer reviewed journal articlesThis research determined noise exposures of equipment operators while documenting worker task. The types of equipment studied included asphalt pavers, backhoes, bulldozers, compaction equipment, excavators, haul trucks, and wheeled loaders.
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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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10/1/2006 - Peer reviewed journal articlesThis article describes noise research conducted in limestone mines, detailing the equipment likely to cause worker overexposures, the occupations experiencing overexposures, and the implications for worker noise exposure reduction.
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10/1/2005 - Conference papersThe focus of this research was to determine the noise exposures of heavy construction equipment operators while documenting the workers’ tasks, (i.e. hauling, moving, and/or pushing construction material).
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9/1/2005 - Information CircularsWater well drillers are exposed to high levels of noise while working. Drillers and owners can work together to prevent noise-induced hearing loss, and measures can be taken to reduce exposure to hazardous noise.
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1/1/2005 - Peer reviewed journal articlesThis paper reports on a cooperative study on vibrating screen noise conducted at a coal preparation plant. Rubber isolators were found to reduce sound levels by 1 dB and amped side plates reduced vibration levels on the screen sides by 1 to 7 dB(A).
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8/1/2000 - Conference papersIncludes general information on the hearing loss problem in mining, a review of hearing protection used and noise regulations in mining, and other background materials.
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Content source: National Institute for Occupational Safety and Health, Mining Program