01442nam 2200373Ka 450 991069684700332120080725090038.0(CKB)5470000002382412(OCoLC)236078557(EXLCZ)99547000000238241220080725d1985 ua 0engtxtrdacontentcrdamediacrrdacarrierMethane control on longwalls with cross-measure boreholes (Lower Kittanning coalbed)[electronic resource] /by F. Garcia and J. Cervik[Pittsburgh, Pa.?] :U.S. Dept. of the Interior, Bureau of Mines,[1985]17 pages digital, PDF fileReport of investigations ;8985Title from title screen (viewed on July 23, 2008).Methane control on longwalls with cross-measure boreholes Coalbed methane drainagePennsylvaniaCambria CountyLongwall miningPennsylvaniaCambria CountySafety measuresCoalbed methane drainageLongwall miningSafety measures.Garcia F(Fred)1059372Cervik Joseph1389517United States.Bureau of Mines.GPOGPOBOOK9910696847003321Methane control on longwalls with cross-measure boreholes (Lower Kittanning coalbed)3441141UNINA