Evolution of methane detecting devices for coal mines /
by L.C. Ilsley and A.B. Hooker.

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Main Author: Ilsley, L. C.
Related Names: Hooker, A. B. (Alva Britt), 1886-
United States. Bureau of Mines.
Language(s): English
Published: [Washington, D.C.] : U.S. Bureau of Mines, 1933.
Subjects: Methane.
Coal mines and mining > Coal mines and mining / Safety measures.
Physical Description: 12 p. ; 27 cm.
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