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- Hazard prevention and control:
- Ground control
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Results 51 - 60 of 74
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2/1/2007 - Conference papersRelatively few longwall mines in the U.S. operate under multiple seam conditions where the two seams are less than 200 ft apart. This paper describes the experience of six that do and lessons learned.
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8/1/2006 - Conference papersBowie Resources maintains one of the most pro-active ground control programs in the U.S. mining industry today. Everyone in the organization from the miners to top management is involved in ground control. The program is described in detail.
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8/1/2006 - Conference papersThis retrospective paper discusses changes in bolt types and usage over the past 24 years, pointing out some of the biggest myths and hailing the most significant advances.
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8/1/2005 - Conference papersThis research seeks to provide design guidelines that enable mine planning engineers to assess the safety risk of an adverse multiple seam mining interaction based on mine geometry factors, mine layout factors, and site specific geologic conditions.
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9/1/2003 - Conference papersAs part of safety and stability studies at three underground mines in the United States, researchers installed earth pressure cells and embedment strain gauges in cemented rockfill to measure stress and strain changes as mining progressed and the rockfi...
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8/1/2003 - Conference papersThe purpose of this paper is to evaluate the preliminary findings of a long-term underground study of various types of surface support liners, and to examine installation practices that are critical for an effective liner material application.
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6/1/2003 - Conference papersThe authors hypothesize that excavation-induced extension fractures are caused by elastic shearing displacement that in turn causes tension oblique to a propagating shear zone.
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4/1/2003 - Technology NewsThe AHSEM computer program contains two modules to improve mine layouts for control of horizontal stress. ARBS is designed to help with selecting the proper roof bolt system from the great variety of available bolt types and patterns.
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8/1/2002 - Conference papersNIOSH has been evaluating developments in sealant support systems for ground control. This paper reviews current technology in shotcrete and membrane development, evaluates a long-term study of sealant materials, and examines installation practices.
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8/1/2002 - Conference papersThis paper offers a close look at the complex structural environment of the Loyalhanna Limestone of southwestern Pennsylvania. Analyses were performed using gas well and core logs, outcrop examinations, underground observations, and mine maps.
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Content source: National Institute for Occupational Safety and Health, Mining Program