Horizontal boring technology :a state-of-the-art study,

Author:	Paone, James.
Additional Authors:	Morrell, Roger J.,, Bruce, William E.,
Year:	1968
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:8392
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	8392
Subjects:	Boring
	Underground electric lines
Link:	https://hdl.handle.net/2027/mdp.39015078517078