Incombustible required on floor and on rib-roof surfaces of coal mines to prevent propagation of explosions

Author:	Hartmann, Irving.
Additional Authors:	Nagy, John., Christofel, F. P.
Year:	1954
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:5053
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	5053
Subjects:	Coal mines and mining--Dust control
	Mine explosions--Prevention
	Dust explosions--Prevention
Link:	https://hdl.handle.net/2027/mdp.39015078469122