Rock-dusting in coal mines of State of Washington.

Bibliographic Details

Other Authors:	Ash, S. H. (Simon Harry), 1889-, Schoning, John G.
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1930.
Series:	Mines Bur. Rpt. of Investigation No. 3015
Subjects:	Mineral dusts. Electronic books.
Online Access:	Connect to the full text of this electronic document