The Online Books Page

Books by Roger J. Morrell:

Books in the extended shelves:

• Morrell, Roger J.: Horizontal boring technology : a state-of-the-art study (U.S. Dept. of the Interior, Bureau of Mines, 1968), also by James Paone and William E. Bruce (page images at HathiTrust)
• Morrell, Roger J.: An investigation of crack propagation with a wedge indenter to improve rock fragmentation efficiency (U.S. Dept. of Interior, Bureau of Mines, 1987), also by David A. Larson and J. F. Mades (page images at HathiTrust)
• Morrell, Roger J.: A laboratory comparison of drag cutting methods in hard rock (U.S. Dept. of the Interior, Bureau of Mines, 1987), also by Sterling J. Anderson and David A. Larson (page images at HathiTrust)
• Morrell, Roger J.: Large-scale laboratory drag cutter experiments in hard rock (U.S. Dept. of the Interior, Bureau of Mines, 1985), also by David E. Swanson and David A. Larson (page images at HathiTrust)
• Morrell, Roger J.: Large-scale testing of the ripper fragmentation system (U.S. Dept. of the Interior, Bureau of Mines, 1987), also by David A. Larson and David E. Swanson (page images at HathiTrust)
• Morrell, Roger J.: Toward development of a hard-rock mining machine--drag cutter experiments in hard abrasive rocks (U.S. Dept. of the Interior, Bureau of Mines, 1983), also by Richard J. Wilson (page images at HathiTrust)
• Morrell, Roger J.: Tunnel boring technology: disk cutter experiments in metamorphic and igneous rocks (U.S. Bureau of Mines, 1974), also by David A. Larson (page images at HathiTrust)
• Morrell, Roger J.: Tunnel boring technology : disk cutter experiments in sedimentary and metamorphic rocks (U.S. Dept. of the Interior, Bureau of Mines, 1970), also by David A. Larson, William E. Bruce, and United States Bureau of Mines (page images at HathiTrust)

Find more by Roger J. Morrell at your library, or elsewhere.