Large-scale testing of the ripper fragmentation system
By: by David A. Larson, Roger J. Morrell, and David E. Swanson.
Contributors: Morrell, Roger J.; Swanson, David E.
Series: Report of investigations ;; 9123; Report of investigations (United States. Bureau of Mines) ;; 9123.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1987
Place of publication: Pittsburgh, Pa
Language: eng
Number of pages: 18
Subjects: Drag bits (Drilling and boring) -- Testing.; Rock mechanics.; Quarries and quarrying.
Notes: Bibliography: p. 16.