Test apparatus for measuring sound power levels of drills
By: by William W. Aljoe, Robert R. Stein, and Roy C. Bartholomae.
Contributors: Stein, Robert R.; Bartholomae, R. C.
Series: Information circular / United States Department of the Interior, Bureau of Mines ;; 9166; Information circular (United States. Bureau of Mines) ;; 9166.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1987
Place of publication: [Pittsburgh, Pa.]
Language: eng
Number of pages: 35
Subjects: Rock-drills -- Noise.
Notes: Bibliography: p. 34-35.