Peak methane concentrations during coal mining : an analysis

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100 1 ‡aKissell, Fred N.
245 1 0 ‡aPeak methane concentrations during coal mining : ‡ban analysis / ‡cby Fred N. Kissell [and others].
264 1 ‡a[Washington] : ‡bU.S. Bureau of Mines, ‡c[1974]
300 ‡a17 pages : ‡billustrations ; ‡c26 cm.
336 ‡atext ‡btxt ‡2rdacontent
337 ‡aunmediated ‡bn ‡2rdamedia
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490 0 ‡aReport of investigations ; 7885
538 ‡aMode of access: Internet.
650 0 ‡aCoal mines and mining ‡xSafety measures.
650 0 ‡aMine explosions.
650 0 ‡aMethane ‡xMeasurement.
710 1 ‡aUnited States. ‡bBureau of Mines.
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DAT 1 ‡a20240807140621.0 ‡b2024-11-19T19:10:15Z
DAT 2 ‡a2024-11-19T18:30:02Z ‡b2019-09-29T20:00:02Z
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