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Conical bit rotation as a function of selected cutting parameters
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Published Year
1980-1989 (1)
Subject
Bits (Drilling and boring)--Testing (1) *
Coal-mining machinery--Testing (1)
Author
Hanson, Bruce D. (1)
Myren, Theodore. (1)
Roepke, Wallace W. (1)
Wingquist, Carl F. (1) *
