Arno Carl Fieldner / Charles Holmes Herty / Craig Miller Bouton / Edmund Spriggs Leaver / Elmer Vernon Potter / Frederick William Lee / George Leslie Oldright / Gustav Wade / Irwin Roman / J. Wallace Joyce / James Washington Paul / John D. Sullivan / Paul Salmon Roller / Robert Dewey Currie / United States. Bureau of Mines / Al Foster / Max Wilhelm Von Bernewitz |