Andrew T. Ireland / Frederick Winfield Brown / James E. Wilson / Joseph Dana Davis / Lloyd F. Christianson / Louis Clair Harrington / Peter Grandone / Reinhardt Thiessen / United States. Bureau of Mines / Charles Harold Fisher / Alton B. Cook / Dewey A. Reynolds / George C. Sprunk / Joseph W. Horne / Vernon Frank Parry / Arthur Koth / Ralph Emmet Brewer / Clarence Raymond Holmes / Henry Herman Storch / Lawrence Delos Schmidt / Abner Eisner / Joseph Herman Field |