Effect of abnormal air conditions on mine workers

Author:	Sayers, R. R.
Year:	1930
Document Type:	USBI
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines,
SUDOC:	C 22.11:6245
Series:	Information circular / Bureau of Mines ;
Report Number:	6245
Subjects:	Mine gases--United States
	Silicosis--United States
	Mine ventilation--United States
Link:	https://hdl.handle.net/2027/mdp.39015077576141