Noise reduction of a pneumatic rock drill

Author:	Visnapuu, A.
Additional Authors:	Jensen, J. W.,
Year:	1975
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:8082
Series:	Report of investigations - Bureau of Mines ;
Report Number:	8082
Subjects:	Rock-drills
	Noise control
Link:	https://hdl.handle.net/2027/mdp.39015078473272