A standard rock suite for rapid excavation research

Author:	Krech, Warren W.
Additional Authors:	Hjelmstad, Kenneth E.,, Henderson, Frank A.,
Year:	1974
Document Type:	BMRA
Issuing Agency:	U.S. Bureau of Mines,
SUDOC:	I 28.23:7865
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	7865
Subjects:	Rock mechanics
	Rocks
	Excavation--Research
Link:	https://hdl.handle.net/2027/mdp.39015078539080