Rock-dusting in coal mines

Author:	Rice, George S.
Additional Authors:	Harrington, D., Sayers, R. R.
Year:	1927
Document Type:	USBI
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines,
SUDOC:	C 22.11:6030
Series:	Information circular / United States Department of Commerce, Bureau of Mines ;
Report Number:	6030
Subjects:	Coal mines and mining--Safety measures
	Mine explosions
Links:	https://hdl.handle.net/2027/mdp.39015077569716
	https://hdl.handle.net/2027/mdp.39015086415356