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- Hazard prevention and control:
- Noise absorption
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Results 1 - 4 of 4
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12/1/2006 - Conference papersThis paper presents a method using a ray-tracing technique to determine absorption coefficients for underground mines. Absorption coefficients are determined and presented for octave bands from 63 Hz to 8 kHz.
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12/17/2013NIOSH-developed technology reduces drilling noise for coal mine roof bolting machines by 3-5 decibels. A drill bit isolator using this technology is now commercially available.
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11/1/2007 - Peer reviewed journal articlesThis paper presents a method using a ray-tracing technique to determine absorption coefficients for underground mines. Absorption coefficients are determined and presented for octave bands from 63 Hz to 8 kHz.
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1/1/2005 - Peer reviewed journal articlesThe noise-control treatments most commonly observed on drills and bolters during this study were evaluated on machines at underground metal mines to determine the amount of noise reduction achieved by each control.
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Content source: National Institute for Occupational Safety and Health, Mining Program