Permissible mine equipment approved during the calendar years 1953-54

Author:	Kearns, R. A.
Additional Authors:	Brunot, H. B.
Year:	1955
Document Type:	USBI
Issuing Agency:	United States Bureau of Mines,
SUDOC:	I 28.27:7722
Series:	Information circular / United States. Bureau of Mines ;
Report Number:	7722
Subjects:	Coal mines and mining--United States--Safety measures
	Mine safety--United States--Equipment and supplies
Link:	https://hdl.handle.net/2027/mdp.39015078459743