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Preliminary evaluation of the relationship of bit wear to cutting distance, forces, and dust using selected commercial and experimental coal-and rock-cutting tools / by Matthew N. Plis, Carl F. Wingquist, and Wallace W. Roepke (Report of investigations ; 9193)

Preliminary evaluation of the relationship of bit wear to cutting distance, forces, and dust using selected commercial and experimental coal-and rock-cutting tools / by Matthew N. Plis, Carl F. Wingquist, and Wallace W. Roepke (Report of investigations ; 9193)
Microform図書
1988<YCA-I 28.23:9193>
National Diet Library
  • Author HeadingPlis, Matthew N Wingquist, Carl F Roepke, Wallace W United Stat...

Electrical properties and attenuation distance of upper Pennsylvanian coal measure rock from southwestern Pennsylvania / by David P. Lindroth, Carl F. Wingquist, and Andrew L. Dehler (Report of investigations ; 8864)

Electrical properties and attenuation distance of upper Pennsylvanian coal measure rock from southwestern Pennsylvania / by David P. Lindroth, Carl F. Wingquist, and Andrew L. Dehler (Report of investigations ; 8864)
Microform図書
1984<YCA-I 28.23:8864>
National Diet Library
  • Author HeadingLindroth, David P Wingquist, Carl F Dehler, Andrew L United State...

Determination of bit forces encountered in hard rock cutting for application to continuous miner design / by Sam G. Demou, Richard C. Olson, and Carl F. Wingquist (Report of investigations ; 8748)

Determination of bit forces encountered in hard rock cutting for application to continuous miner design / by Sam G. Demou, Richard C. Olson, and Carl F. Wingquist (Report of investigations ; 8748)
Microform図書
1983<YCA-I 28.23:8748>
National Diet Library
  • Author HeadingDemou, Sam G Olson, Richard C Wingquist, Carl F United States. Bureau of Mine...

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