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1
Control of longwall gob gas with cross-measure boreholes (upper Kittanning coalbed)
“…United States. Bureau of Mines…”
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Government Document Online Book -
2
Methane diffusion parameters for sized coal particles a measuring apparatus and some preliminary results /
“…United States. Bureau of Mines…”
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Government Document Online Book -
3
Methane emission rate studies in a central Pennsylvania mine
“…United States. Bureau of Mines…”
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Government Document Online Book -
4
Remote fiber-optic methane monitor
“…United States. Bureau of Mines…”
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Government Document Online Book