Lake Superior Iron Resources

Reexamination of Nonmagnetic Taconite Occurrences in the Hibbing, Minn., Area by Flotation, Magnetic Separation, and Petrographic Methods

by Donald K. Deardorff, Edward J. Murphy, Frederic A. Skirvin, J. B. Zink, Janet L. Shultz, Joseph W. Town, Karl-Heinz Frohne, Leonard F. Heising, Manuel Gomez, Maurice Deul, Milton L. Weiss, R. A. Guereca, Renpei Yoda, Richard N. Spencer, Robert M. Doerr, Robert W. Ageton, William H. Eddy, William R. Hardwick, William S. Sanner, C. B. Daellenbach, Edward A. Mihok, Elton L. Litchfield, Herbert R. Babitzke, Horace P. Richardson, James S. Browning, L. A. Neumeier, Mark I. Copeland, Phillip E. Sanker, Robert A. Friedel, Thomas T. Campbell, Willard D. Washington, William Samuel Landers, A. G. Sharkey, C. K. Boyd, Edwin E. Anderson, Frank E. Block, Haruo Katō, J. W. Jensen, Jack C. White, James E. Hardemon, L. M. Walker, Maurice Jarvis Peterson, R. P. Adams