Design of a compact muffler for a jumbo drill /

Bibliographic Details
Corporate Author:	United States. Bureau of Mines
Other Authors:	Visnapuu, A. (Aarne)
Format:	Government Document Book
Language:	English
Published:	[Washington] : Dept. of the Interior, Bureau of Mines, 1979.
Series:	Report of investigations (United States. Bureau of Mines) ; 8337.
Subjects:	Rock-drills. Mineral industries > Noise. Mining machinery > Noise.

Description
Physical Description:	12 pages : illustrations ; 27 cm.
Bibliography:	Bibliography: page 12.