Elmer Vernon Potter / Frederick Winfield Brown / George C. Sprunk / George Edward McElroy / George William Jones / Joseph Dana Davis / Kenneth Keith Kelley / Ned H. Snyder / Paul Cohen / Sidney Speil / United States. Bureau of Mines / Arno Carl Fieldner / Dewey A. Reynolds / Hugh J. O'Donnell / Louis Harry Berkelhamer / Robert E. Kennedy / Robert Johnston Swingle / William Thomas Reid / George James Thomas / Joseph Adam Pask / Ben Davies / Clarence Raymond Holmes / Henry Herman Storch / James T. McCartney / Abner Eisner / Joseph Herman Field | 