Use of wetting agents for allaying coal dust in mines

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040 ‡aCIN ‡cCIN ‡dOCLCQ ‡dLHL ‡dOCLCG ‡dUSBMI
049 ‡aUSBI
086 0 ‡aI 28.27:7131
100 1 ‡aHartmann, Irving, ‡d1905-
245 1 0 ‡aUse of wetting agents for allaying coal dust in mines / ‡cby Irving Hartmann and H.P. Greenwald.
260 ‡a[Washington, D.C.] : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c1940.
300 ‡a12 p. ; ‡c27 cm.
490 0 ‡aInformation circular / Bureau of Mines ; ‡v7131
500 ‡a"August 1940."
500 ‡aCover title.
504 ‡aIncludes bibliographical references.
538 ‡aMode of access: Internet.
650 0 ‡aWetting agents.
650 0 ‡aCoal mines and mining ‡xDust control.
700 1 ‡aGreenwald, H. P. ‡q(Harold Putnam), ‡d1893-
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