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- Geographic regions:
- West Virginia
- Document types:
- Conference papers
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Results 1 - 5 of 5
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5/1/2007 - Conference papers, Information CircularsA detailed evaluation of the multiple-seam experiences at Harris No. 1 Mine was done as part of NIOSH's nationwide multiple-seam mining case history database.
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3/1/2006 - Conference papersMore than 300 case histories have been collected from underground mines mainly in central Appalachia. This paper focuses on several of the more challenging multiple seam mining situations that have been encountered.
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8/1/2005 - Conference papersResults show that the remnant upper seam structure's size can influence multiple seam interaction. Specifically, smaller critically loaded upper seam pillars appear more likely to cause lower seam ground control problems than wider pillars.
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8/1/2004 - Conference papersPolyurethane injection is a proven method of rock stabilization in even the weakest, most broken ground. Optimization of the injection design by pre-injection video diagnostics can greatly contribute to successful and efficient roof stabilization.
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8/1/2002 - Conference papersStudies have identified a number of factors for evaluating a pillar extraction plan. This paper discusses each of the factors, presents relevant accident statistics, and shows how the risk factors can be combined to estimate the overall hazard.
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Content source: National Institute for Occupational Safety and Health, Mining Program