- Sebastian J. Aresco, Cecil Q. Cupps, Francis R. McDonald, Francis X. Tartaron, Frederick W. Hoertel, George S. Koch, Henry G. Iverson, J. M. Stuve, Jack Smith, John S. Berber, Leo A. Schrider, Murray Weintraub, Paul G. Barnard, R. J. Heemstra, Robert W. Van Dolah, Russell E. Griffin, Thomas E. Hill, Van E. Shaw, William P. Haynes, John D. Ruschak, Arthur Alonzo Orning, Eben L. Singleton, Frank C. Gibson, Glenn L. Cook, H. B. Neilson, James G. Donaldson, John B. Janus, Joseph Fry, Richard F. Link, Roald Edmund Lindstrom, Robert Lawrence Marovelli, Robert T. Johansen, Willis A. Calhoun, J. N. Murphy, Cecil H. Schwartz, Harry R. Johnson
· 1967
- Alla D. Mah, Bruce W. Naugle, D. A. Douglass, David E. Fogelson, Elwin A. Magill, Farrel W. Lytle, H. W. Sohns, John B. Gayle, John H. Hild, John J. Mulligan, Lloyd Harold Banning, Richard Edward Lindstrom, Richard F. Zaffarano, Richard J. Leary, Robert L. Montgomery, Van E. Shaw, Vernon B. Dale, W. V. Kuster, Walter H. Oppelt, B. J. Mitchel, C. K. Rose, Cecil Q. Cupps, Donald J. Bauer, E. E. Jukkola, George W. Birge, Howard H. Heady, Theodore D. Hubert, Wallace E. Anable, Wayne R. Kube, Wilbur I. Duvall, William Alan McKinney, William H. Eddy, D. E. Wolfson, J. Fry, John M. Gomes, R. E. Perry, T. W. Kamps, Thomas C. Atchison, W. I. R. Murphey, William F. Hergert
· 1959
No image available
No image available
David E. Fogelson, H. N. Smith, Bruce W. Naugle, Carl Rampacek, D. A. Douglass, Edward Gerard King, Harold William Sohns, John H. Hild, John J. Mulligan, John W. Chester, Lloyd Harold Banning, Richard Edward Lindstrom, Richard F. Zaffarano, Richard J. Leary, Robert L. Montgomery, Thomas Calvin Atchison, United States. Bureau of Mines, Van E. Shaw, Vernon B. Dale, Victor Kalcevic, W. V. Kuster, Willis Beckering, A. U. Christensen, B. J. Mitchel, Cecil Q. Cupps, Charles K. Rose, Donald J. Bauer, E. E. Jukkola, George W. Birge, Harry C. Fuller, J. D. Lankford, Kenneth Keith Kelley, Theodore D. Hubert, W. E. Anable, Walter W. Fowkes, Wilbur I. Duvall, William Alan McKinney, William E. Tournay, John M. Gomes, Joseph Fry, Julius Bruce Clemmer, P. T. Waddleton, W. C. Kommes, W. I. R. Murphey, William F. Hergert· 1959