Modify Selection
- Hazard prevention and control:
- Support design and selection
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Results 11 - 20 of 91
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10/1/2003 - Information CircularsThis report describes the geologic origin, association, and potential danger from the most common hazards. Discussions of weak rock include drawrock, rider coals, head coal, stackrock, and stream valley effects.
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8/1/2001 - Conference papersThis paper discusses misconceptions about how roof supports perform and factors that impact their performance. The paper is limited to a discussion of secondary roof support systems and powered roof supports such as longwall shields.
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2/1/2001 - Conference papersThree alternative approaches to reduce the risk of catastrophic collapse are described: containment, prevention, and full-extraction. Without good data available on post-failure pillar behavior, containment and full-extraction are the safest.
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8/1/2000 - Conference papersThe 1990s saw an unprecedented increase in technologies for more effective, easier to install roof support in underground mines. To facilitate application and improve mine safety, NIOSH developed the Support Technology Optimization Program (STOP).
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8/1/1998 - Conference papersA design technique is presented which provides stone miners with a method for making stability assessments. The consequences of widening rooms, changing geology and horizontal stresses, and different rock bolts on roof beam failure are discussed.
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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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9/18/2020 - Contracts and cooperative agreementsA capacity-building contract with the Colorado School of Mines to develope improvements in ground characterization, monitoring, analysis, and design approaches.
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9/16/2020 - Research projectsA project to employ state-of-the-art ground control science, in a targeted program of case studies, to develop engineering solutions for ground control hazards in underground metal mines.
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7/29/2020 - PublicationsTwo Reports of Investigations provide detailed findings on ground stress redistribution resulting from mining, which could ultimately lead to significant improvements in the stability of mine excavations and ensure a safer working environment for miners.
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1/1/2020 - Peer reviewed journal articlesA study of the loading characteristics of mechanical bolts (stiffness and capacity) installed in coal ribs at five underground coal mines.
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Content source: National Institute for Occupational Safety and Health, Mining Program