Methods of sampling and analyzing coal-mine dusts for incombustible content

Author:	Owings, C. W.
Additional Authors:	Selvig, W. A., Greenwald, H. P.
Year:	1940
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7113
Series:	Information Circular / Bureau of Mines ;
Report Number:	7113
Subjects:	Mine dusts
	Coal mines and mining--Dust control
Link:	https://hdl.handle.net/2027/mdp.39015078534263