Hazards to underground workers from inflammable surface structures near mine openings

Author:	Harrington, D.
Year:	1932
Document Type:	MAIN
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines,
SUDOC:	C 22.11:6557
Series:	Information circular / Bureau of Mines ;
Report Number:	6557
Subjects:	Mine safety
	Coal mines and mining--Safety measures
Link:	https://hdl.handle.net/2027/mdp.39015095085505