Miscellaneous accidents in bituminous-coal mines.

Year:	1947
Document Type:	MAIN
Issuing Agency:	U.S. Govt. Print. Off.,
SUDOC:	I28.6:60
Series:	Miners' circular ;
Report Number:	60
Subjects:	Mine safety--United States
	Coal mine accidents--United States--Prevention
Link:	https://hdl.handle.net/2027/mdp.39015077561218