Explosions and fires in bituminous-coal mines :Coal-mine accident-prevention course.

Year:	1946
Document Type:	MAIN
Issuing Agency:	U.S. Govt. Print. Off.,
SUDOC:	I28.6:50
Series:	Miners' circular ;
Report Number:	50
Subjects:	Mine explosions
	Mine fires--United States--Prevention and control
	Coal mine accidents--United States--Prevention
Link:	https://hdl.handle.net/2027/mdp.39015077562232