Emergency escapeways from coal mines

Author:	Artz, R. T.
Additional Authors:	Simpson, O. V.
Year:	1948
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7478
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7478
Subjects:	Mine fires
	Mine explosions
	Coal mines and mining--Safety measures
	Mine rescue work
Link:	https://hdl.handle.net/2027/mdp.39015078463737