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Results 1 - 10 of 13
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9/18/2020 - Contracts and cooperative agreementsA capacity-building contract with the University of Utah to improve seismic coverage, instrument a yield pillar, develop an extended numerical model, and evaluate statistical methods.
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7/16/2016 - Contracts and cooperative agreementsA contract to assess four types of existing technology that can be applied to seals in a nondestructive manner under experimental conditions, including radio frequency sensing, ultrasonic sensing, ground penetrating radar, and tracer gas methods.
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8/1/2005 - Conference papersThe objective of this work was to determine if GPR could be used to help assess the mine roof conditions near the No. 4 Portal area of the NIOSH Lake Lynn Experimental Mine (LLEM).
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3/1/2005 - Conference papersNIOSH used ground-penetrating radar (GPR) technology to determine if each of three test mine seals were uniformly constructed. The results suggest that GPR could be used as a tool to evaluate mine seal characteristics and construction uniformity.
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8/1/2004 - Conference papersThe study tested ground penetrating radar's ability to determine the extent of grout penetration into mine roof strata in the NIOSH Safety Research Coal Mine. The study showed that GPR technology can be useful in detecting roof changes due to grout.
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7/1/2003 - Conference papersThis study indicates that it may be possible to use ground penetrating radar (GPR) for initial underground mine studies followed by directional drilling to accurately delineate the extent and position of adjacent abandoned mine workings.
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2/1/2002 - Conference papersOver the years, more than 20,000 mine seals have been erected in underground coal mines in the United States. The National Institute for Occupational Safety and Health is conducting research to develop design guidelines, to investigate noninvasive tech...
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7/1/1997 - Technology NewsTo provide a safe, practical, cost-effective method for measuring coal rib thickness during highwall mining.
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9/1/1996 - Conference papersThe U.S. Department of Energy Pittsburgh Research Center, has developed and field tested a spatial, spectral sensor for measuring the thickness of mineral deposits.
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1/1/1996 - Reports of InvestigationsGround penetrating radar (GPR) has been investigated by NIOSH for its potential to determine roof hazards in underground mines. GPR surveys were conducted at four field sites with accompanying ground truth to evaluate GPR for roof hazard detection.
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Content source: National Institute for Occupational Safety and Health, Mining Program