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- Mine locations, excavations, and structures:
- Faces
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Results 1 - 10 of 12
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9/1/2007 - Conference papersThis paper reviews how simultaneous application of three basic elements reduces the methane explosion hazard at coal mine working faces: (1) adequate ventilation, (2) regular monitoring of gas concentrations, and (3) elimination of ignition sources.
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6/1/2006 - Conference papersNIOSH conducted a study with the goal of characterizing methane emissions from increasing face lengths in the Pittsburgh Coalbed and providing a method of predicting emissions increases from longer faces and of planning for more methane control.
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6/1/2006 - Conference papersNIOSH conducted a longwall methane emission and mining time study at a Pittsburgh Coalbed mine to predict emissions from a longer face, and developed and applied mathematical formulas and constants to characterize four emission contributors.
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3/1/2008 - Conference papersSome surprising results were revealed in this study designed and implemented by NIOSH to evaluate the effectiveness of pre-driven longwall recovery rooms supported with pumpable concrete roof supports.
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7/1/2007 - Conference papersA cooperative study was conducted to evaluate the effectiveness of (partially) pre-driven longwall recovery rooms supported with pumpable roof supports.
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7/1/2007 - Conference papersThis paper addresses both the safety and the operational issues associated with mobile roof support (MRS) usage during shield recovery. It also discusses new developments, including the use of the inherently safer battery powered MRS's.
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2/1/2007 - Conference papersThe fact that methane ignitions continue to occur at the mining face indicates that monitoring with machine-mounted methanometers does not always indicate the presence of high methane concentrations. Methane concentrations at the face change quickly du...
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6/1/2006 - Conference papersTests were conducted in a full-scale ventilation gallery to determine the influence of mining machine-mounted water sprays on airflows and methane concentrations at the face when blowing ventilation systems are used. Test results using different spray a...
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8/1/2004 - Conference papersThe San Juan Mine and the National Institute for Occupational Safety and Health conducted a study to measure how development mining affected bolt loads.
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2/1/2001 - Conference papersPast studies with blowing face ventilation systems have shown that using a machine-mounted scrubber and water sprays can reduced methane levels at the face.
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Content source: National Institute for Occupational Safety and Health, Mining Program