- Martin Joseph Gavin, Richard Valentine Ageton, Willard Walker Cutler, Arno Carl Fieldner, Arthur L. Murray, Byron O. Pickard, C. Lorimer Colburn, C. R. Forbes, Charles Edward Munroe, Daniel Harrington, Donald B. Dow, Ernest Woodward Dean, Eugene Delos Gardner, F. J. Bailey, G. St. John Perrott, George Arthur Burrell, George Edward McElroy, Guy B. Taylor, H. F. O'Brien, J. J. Bourquin, John Gross, Joseph Dana Davis, Lee Clyde Ilsley, N. A. C. Smith, Oliver Bowles, R. M. Winslow, Raymond Bardeen Ladoo, Roy R. Hornor, Royd Ray Sayers, Royden Edward Head, Samuel Wilson Parr, Thomas Fraser, United States. Bureau of Mines, William Hawes Coghill, William Wallace Odell, A. D. Bauer, C. E. Coleman, Carl O. Anderson, George William Jones, H. H. Hill, Harry Fagan Yancey, Henry Rust O'Brien, Horace Chamberlain Porter, J. W. Paul, John T. Aydelotte, Lewis C. Karrick, Maurice Bacon Cooke, Palmer B. Place, Selwyne Perez Kinney, Sidney Hershberg Katz, Thomas Ernest Layng, Walker Stillwell Clute, C. R. Bopp, E. C. White, George Stanley Scott, W. B. Lerch, W. E. Perdew
· 1921
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George William Jones, Lee Clyde Ilsley, Alva Britt Hooker, Ernest L. Garton, Foster Fraas, George Leslie Oldright, Gordon Ray Hopkins, Harry Blackburn Hill, R. E. Heithecker, Richard Jacob Lund, Sam S. Taylor, Wilbert James Huff, William Harlan Ode, Ernest J. Gleim, Earl Jeffries Coggeshall, Edwin Lee Rawlins, H. W. Davis, L. F. Christianson, Oliver Caldwell Ralston, Walter Alfred Selvig, Hilary Breton Brunot, C. R. Bopp· 1936
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· 1920
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Arthur William Fahrenwald, Daniel Harrington, Earl Carlton Lane, Edmund Spriggs Leaver, Frank Arthur Patty, Frank S. Wartman, George Samuel Rice, George St. John Perrott, Henry Alfred Doerner, Ludwig Schmidt, Martin Joseph Gavin, Percy Nicholls, R. D. Leitch, Rudolph Richard Brandenthaler, Scott Turner, Selwyne Perez Kinney, Spencer Pritchard Howell, William W. Odell, Arch L. Foster, D. B. Gawthrop, Harold Putnam Greenwald, Jesse A. Woolf, Noah Arthur Tolch, W. S. Morris, W. T. Boyer, William Parks Yant, C. A. Taylor, C. R. Bopp, Henry C. Howarth· 1929
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