Arno Carl Fieldner / Cecil Clayton Ward / Clarence Watson Owings / Daniel Harrington / Edmund Spriggs Leaver / George Hall Ashley / George Wallace Grove / Harold Manton Smith / Harry Fagan Yancey / Henry Alfred Doerner / Joseph W. Horne / Lawrence Bursley Berger / Paul Salmon Roller / Theodore W. Johnson / United States. Bureau of Mines / W. J. Franklin / William Elmer Rice / William Hawes Coghill / Charles Reuben Austin / David Benjamin Taliaferro / Harry T. Rall / Helmuth Herman Schrenk / Miles Benjamin Royer / Murray Halwer / Virgil Miller / W. Cone Holliman / Walter Alfred Selvig / Peter Grandone | 