Operating coal mines without accidents

Author:	Harrington, D.
Additional Authors:	Fene, W. J.
Year:	1934
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:6762
Series:	Information circular / Bureau of Mines ;
Report Number:	6762
Subjects:	Coal mines and mining--Safety measures
	Mine safety
Link:	https://hdl.handle.net/2027/mdp.39015077571977