Lighting practices in coal mines of the United States

Author:	Hooker, A. B.
Additional Authors:	Owings, C. W.
Year:	1938
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7035
Series:	Information circular / Bureau of Mines ;
Report Number:	7035
Subjects:	Coal mines and mining--Safety measures
	Mine lighting
	Mine lighting--Equipment and supplies
Link:	https://hdl.handle.net/2027/mdp.39015077575457