Miniature bilevel alarm for oxygen-deficient atmospheres

Author:	Bradburn, Robert A.
Additional Authors:	Bowser, Merle L.
Year:	1968
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:7165
Series:	Report of investigations / Bureau of Mines ;
Report Number:	7165
Subjects:	Mine safety--Equipment and supplies
	Mine ventilation
Link:	https://hdl.handle.net/2027/mdp.39015078537498