Mine ventilation

Author:	Harrington, D.
Year:	1939
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7047
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7047
Subjects:	Mine dusts
	Mine ventilation
	Mine safety
	Air--Purification
Link:	https://hdl.handle.net/2027/mdp.39015077575523