Testing of coal-cutter materials for incendivity and radiance of sparks

Additional Authors:	Blickensderfer, Robert., Kelley, J. E., Copeland, M. I., Deardorff, D. K.
Year:	1972
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of Interior, Bureau of Mines,
SUDOC:	I 28.23:7713
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	7713
Subjects:	Mine gases
	Mine tools
Link:	https://hdl.handle.net/2027/mdp.39015078520643