Hydraulic tunneling in St. Peter sandstone at Minneapolis, Minn.

Author:	Lewis, Walter E.
Year:	1950
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7571
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7571
Subjects:	Tunneling--Minnesota
	Hydraulic engineering
Link:	https://hdl.handle.net/2027/mdp.39015078455501