Tunnel boring technology:disk cutter experiments in metamorphic and igneous rocks

Author:	Morrell, Roger J.
Additional Authors:	Larson, David A.,
Year:	1974
Document Type:	BMRA
Issuing Agency:	U.S. Bureau of Mines,
SUDOC:	I 28.23:7961
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	7961
Subjects:	Mining machinery
	Tunneling
	Tunneling--Equipment and supplies
Link:	https://hdl.handle.net/2027/mdp.39015078484493