Methods and cost of mining fluorspar at Rosiclare, Ill.

Author:	Reeder, Edwin C.
Year:	1930
Document Type:	MAIN
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines,
SUDOC:	C 22.11:6294
Series:	Information Circular ;
Report Number:	6294
Subjects:	Mining engineering
	Fluorspar--Illinois
Link:	https://hdl.handle.net/2027/mdp.39015095083773