- Alan J. Leighton, Brent W. Madsen, Charles M. McCulloch, Edward G. King, Hyman Schultz, J. M. Stuve, John M. Gomes, Kuppusamy Thirumalai, Philip Cocran Tully, R. D. Saltsman, Richard J. Bielicki, Robert M. Ray, Webster S. Anderson, Zachary J. Fink, Dale W. Richardson, David T. Adler, Edward D. Thimons, Grant Lamont Anderson, Herbert B. Carroll, Joseph Grumer, Kenji Uchida, Michael John Ferrante, P. M. Sullivan, Ralph V. Higgins, Rees D. Groves, Sam G. Demou, F. E Walker, Fred N. Kissell, Frederick E. Armstrong, L. B. Pankratz, Morton Min Wong, Richard L. Fischer
· 1975
- Annie G. Smelley, August J. Kwitowski, Daryl E. Radcliffe, George M. Lucich, Jalna R. Zatko, K. J. Liles, Murray Rosen, R. S. DeCesare, Robert F. Holub, Stephen L. Law, Thomas G. Carnahan, United States. Bureau of Mines, Benjamin W. Haynes, Bernard J. Scheiner, Charles Milton Flynn, F. J. Palumbo, H. Heystek, Lewis V. Wade, Philip W. Holland, Raymond M. Stateham, P. M. Sullivan, Roald Edmund Lindstrom, William J. Campbell
· 1979