Roof bolting and dust control

Additional Authors:	Owings, C. W., Westfield, James., Johnson, Leslie., Harmon, John P., Anderson, Floyd G.
Year:	1951
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7615
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7615
Subjects:	Mine roof bolting
	Coal mines and mining--Dust control
Link:	https://hdl.handle.net/2027/mdp.39015078456087