Longwall gob degasification with surface ventilation boreholes above the Lower Kittanning coalbed

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100 1 ‡aMoore, T. D.
245 1 0 ‡aLongwall gob degasification with surface ventilation boreholes above the Lower Kittanning coalbed / ‡cby T.D. Moore, Jr., Maurice Deul, and Fred N. Kissell.
260 ‡a[Washington] : ‡bBureau of mines, ‡c[1976].
300 ‡a13 p. : ‡bill., diagrs. ; ‡c26 cm.
490 0 ‡aReport of investigations - Bureau of Mines ; ‡v8195
504 ‡aIncludes bibliographical references (p. 13).
538 ‡aMode of access: Internet.
650 0 ‡aMethane.
650 0 ‡aMine ventilation.
700 1 ‡aKissell, Fred N.
700 1 ‡aDeul, Maurice, ‡ejoint author.
710 1 ‡aUnited States. ‡bBureau of Mines.
899 ‡a39015078473256
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DAT 1 ‡a20221210060735.0 ‡b2024-02-23T18:55:56Z
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