Liquid carbon dioxide used to extinguish a gob fire in a German coal mine

Author:	Rice, George S.
Additional Authors:	Hartmann, Irving
Year:	1937
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:6970
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	6970
Subjects:	Carbon dioxide
	Coal mines and mining--Germany
	Mine fires--Germany
Link:	https://hdl.handle.net/2027/mdp.39015077569872