A. C. Richardson / Ben Edwin Lindsly / Bennie William Gandrud / C. W. Gandrud / Carl Ernest Reistle / Fred Daniel DeVaney / G. R. Fitterer / George Leslie Oldright / George Randolph Hopkins / George William Jones / Harry Blackburn Hill / Harry Fagan Yancey / Herbert Tomlinson / James Washington Paul / John Edward Conley / Oliver Bowles / R. L. Marek / Scott Turner / William Waugh Adams / Reginald Scott Dean / United States. Bureau of Mines / D. L. Sibray / E. P. Hayes / Edwin Lee Rawlins / John Campbell / R. E. Zane / Robert E. Kennedy / W. H. Carrington / Walter Edgar Keck / John Gross / B. S. Followill / F. K. Shelton / F. M. Goodwin | 