Portable methane detectors :effects of gases in mine atmospheres

Additional Authors:	Watson, H. A., Beatty, R. L., Beckert, A. J., Dufresne, D. E.
Year:	1966
Document Type:	USBI
Issuing Agency:	United States Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:8292
Series:	Information circular / United States. Bureau of Mines ;
Report Number:	8292
Subjects:	Mine gases
	Methane
Link:	https://hdl.handle.net/2027/mdp.39015078514497