Some factors affecting and suggested ways for improving coal-mine ventilation, with particular reference to mines in Illinois, Indiana, and Western Kentucky

Author:	Herbert, C. A.
Year:	1953
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7656
Series:	Information circular / United States. Bureau of Mines ;
Report Number:	7656
Subjects:	Coal mines and mining--Kentucky
	Coal mines and mining--Indiana
	Coal mines and mining--Illinois
	Mine ventilation
Link:	https://hdl.handle.net/2027/mdp.39015078456590