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- Research disciplines:
- Acoustics
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10/22/2016 - Research projectsA project to develop durable noise controls that reduce the noise exposure of longwall mining system crews and facilitate the commercialization of the controls to make them available for all miners.
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9/17/2012 - Contracts and cooperative agreementsA contract to develop and demonstrate a modified, fiber optic-based perimeter security system to track personnel in an underground coal mine.
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11/1/2010 - Conference papersTo assess benefits of hearing protection devices for prevention of noise-induced hearing loss in miners, NIOSH tested the impact of nine electronic sound restoration hearing protectors on speech intelligibility in selected mining background noises.
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11/1/2009 - Conference papersThis paper describes NIOSH research to develop noise controls for mining equipment whose operators exceed the Permissible Exposure Level (PEL). Two alternative approaches are explored to the conventional beamforming algorithm.
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7/1/2009 - Peer reviewed journal articlesThis paper presents the results of a NIOSH study in collaboration with Acoustical and Vibrations Engineering Consultants Inc. (AVEC) to determine the dominant noise sources on a vibrating screen machine at low frequencies, i.e., 250 to 1,000 Hz.
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3/1/2008 - Peer reviewed journal articlesThis study, conducted as part of a project to evaluate a new type of noise exposure monitoring paradigm, showed that the effects of dosimeter microphone placement in a diffuse field were found to be minor for most of the test microphones/locations.
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6/1/2003 - Conference papersDocuments the refurbishing and instrumentation of the PRL reverberation chamber to bring it up to compliance with the ISO 3743-2 standard for engineering grade measurements for broadband noise.
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1/1/1990 - Reports of InvestigationsThe Bureau of Mines has developed an acoustic test for determining if a rock salt sample is from a "normal" nongassy salt face or from a gassy face where an outburst has the potential to occur.
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1/1/1987 - Reports of InvestigationsThe Bureau of Mines has developed a practical methodology for determining occluded gas contents of domal rock salt samples. The method, which is portable and fieldworthy, provides results in 5 min or less.
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9/1/1974 - Contract reportsMeasurements of surface magnetic field noise were made at various locations over the Geneva Coal Mine near Price, Utah, on June 12, 1973. Results of measurements of distant sferics indicate rather sharp cutoff frequencies below which broadband, impulsiv...
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Content source: National Institute for Occupational Safety and Health, Mining Program