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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.
Drainage of Methane From the Overlying Pocahontas No. 4 Coalbed From Workings in the Pocahontas No. 3 Coalbed1/1/1979 - Reports of InvestigationsThe Bureau of Mines conducted an experimental degasification project in Island Creek Coal Company Virginia Pocahontas No. 5 Mine. Methane from the overlying Pocahontas No. 4 Coalbed was entering mine workings in the Pocahontas No. 3 Coalbed through frac...