Rock-dusting in coal mines of State of Washington.

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Bibliographic Details
Online Access:	Full Text (via ProQuest)
Other Authors:	Ash, S. H. (Simon Harry), 1889-, Schoning, John G.
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [s.n.], 1930.
Series:	Mines Bur. Rpt. of Investigation No. 3015.
Subjects:	Mineral dusts.

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Full Text (via ProQuest)

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Call Number:	C22.12-3015
C22.12-3015	Available