SCIENTIFIC AND TECHNICAL STAFF OF THE 

 STATE GEOLOGICAL SURVEY DIVISION 



100 Natural Resources Building, Urbana 



M. M. LEIGHTON, Ph.D., Chief 

 Enid Townley, M.S., Assistant to the Chief 

 Velda A. Millard, Junior Asst. to the Chief 

 Helen E. McMorris, Secretary^ to the Chief 

 Effie Hetishee, B.S., Geological Assistant 



GEOLOGICAL RESOURCES 



Ralph E. Grim, Ph.D., Petrographer and Principal 

 Geologist in Charge 



Coal 



G. H. Cady, Ph.D., Senior Geologist and Head 

 L. C. McCabe, Ph.D., Geologist (on leave) 

 R. J. Helfinstine, M.S., Mech. Engineer 

 Charles C. Boley, M.S., Assoc. Mining Eng. 

 Bryan Parks, M.S., Asst. Geologist 

 Earle F. Taylor, M.S., Asst. Geologist (on leave) 

 Ralph F. Strete, A.M., Asst. Geologist 

 Robert M. Kosanke, M.A., Asst. Geologist _ 

 Robert W. Ellingwood, B.S., Asst. Geologist 

 George M. Wilson, M.S., Asst. Geologist 

 Arnold Eddings, B.A., Research Assistant (on leave) 

 Raymond Siever, B.S., Research Assistant (on leave) 

 •John A. Harrison, B.S., Research Assistant (on leave) 

 Mary E. Barnes, B.S., Research Assistant 

 Margaret Parker, B.S., Research Assistant 

 Elizabeth Lohmann, B.F.A., Technical Assistant 



Oil and Gas 



A. H. Bell, Ph.D., Geologist and Head 

 Frederick Squires, B.S., Petroleum Engineer 

 Stewart Folk, M.S., Assoc. Geologist (on leave) 

 Ernest P. DuBois, Ph.D., Assoc. Geologist 

 David H. Swann, Ph.D., Assoc. Geologist 

 Virginia Kline, Ph.D., Assoc. Geologist 

 Paul G. Luckhardt, M.S., Asst. Geologist 



(on leave) 

 Wayne F. Meents, Asst. Geologist 

 James S. Yolton, Asst. Geologist 

 Margaret Sands, B.S., Research Assistant 



Industrial Minerals 



J. E. Lamar, B.S., Geologist and Head 

 H. B. Willman, Ph.D. Geologist 

 Robert M. Grogan, Ph.D., Assoc. Geologist 

 Robert T. Anderson, M.A., Asst. Physicist 

 Robert R. Reynolds, M.S., Asst. Geologist 

 Margaret C. Godwin, A.B., Asst. Geologist 



Clay Resources and Clay Mineral Technology 



Ralph E. Grim, Ph.D., Petrographer and Head 

 Richards A. Rowland, Ph.D., Asst. Petrographer 



(on leave) 

 William A. White, B.S., Research Assistant 



Groundwater Geology and Geophysical Exploration 



Carl A. Bays, Ph.D., Geologist and Engineer, and 



Head 

 Robert R. Storm, A.B., Assoc. Geologist 

 Arnold C. Mason, B.S., Assoc. Geologist (on leave) 

 Merlyn B. Buhle, M.S., Asst. Geologist 

 M. W. Pullen, Jr., M.S., Asst. Geologist 

 Charles G. Johnson, A.B., Asst. Geologist (on leave) 

 Margaret J. Castle, Asst. Geologic Draftsman 

 Robert N. M. Urash, B.S., Research Assistant 



Areal and Engineering Geology 



George. E. Ekblaw, Ph.D., Geologist and Head 

 Richard F. Fisher, M.S., Asst. Geologist 



Stratigraphy and Paleontology 



J. Marvin Weller, Ph.D., Geologist and Head 



Chalmer L. Cooper, Ph.D., Geologist 



Heinz A. Lowenstam, Ph.D., Assoc. Geologist 



Subsurface Geology 



L. E. Workman, M.S., Geologist and Head 

 C. Leland Horberg, Ph.D., Assoc. Geologist 

 Frank E. Tippie, B.S., Asst. Geologist 

 Paul Herbert, Jr., B.S., Asst. Geologist 

 Marvin P. Meyer, B.S., Asst. Geologist 

 Elizabeth Pretzer. A.B., Research Assistant 

 Ruth E. Roth, B.S., Research Assistant 



Physics 



R. J. Piersol, Ph.D., Physicist 



B. J. Greenwood, B.S., Mech. Engineer 



GEOCHEMISTRY 



Frank H. Reed, Ph.D., Chief Chemist (on leave) 

 Carol J. Adams, B.S., Research Assistant 



Coal 



G. R. Yoke, Ph.D., Chemist and Head* 

 Herman S. Levine, B.S., Research Assistant 



Industrial Minerals 



J. S. Machin, Ph.D., Chemist and Head 

 Delbert L. Hanna, A.M., Asst. Chemist 



Fluorspar 



G. C. Finger, Ph.D., Chemist and Head 

 Oren F. Williams, B.Engr., Asst. Chemist 



Chemical Engineering 



H. W. Jackman, M.S.E., Chemical Engineer and Head 

 P. W. Henline, M.S., Assoc. Chemical Engineer 

 James C. McCullough, Research Associate 

 Donald M. Fort, M.S., Asst. Chemist 

 James H. Hanes, B.S., Research Assistant 



(on leave) 

 Leroy S. Miller, B.S., Research Assistant 



(on leave) 



X-ray and Spectrograph 

 W. F. Bradley, Ph.D. 



Chemist and Head 



Analytical 



O. W. Rees, Ph.D., Chemist and Head* 

 L. D. McVicker, B.S., Chemist 

 Howard S. Clark, A.B., Assoc. Chemist 

 William F. Wagner, M.S., Asst. Chemist 

 Cameron D. Lewis, B.A., Asst. Chemist 

 William T. Abel, B.A., Research Assistant 

 Melvin A. Rebenstorf, B.S., Research Assistant 

 Jean Lois Rosselot, A.B., Research Assistant 



MINERAL ECONOMICS 



W. H. Voskuil, Ph.D., Mineral Economist 

 Douglas F. Stevens, M.E., Research Associate 

 Nina Hamrick, A.B., Research Assistant 

 Ethel M. King, Research Assistant 



PUBLICATIONS AND RECORDS 



George E. Ekblaw, Ph.D., Geologic Editor 

 Chalmer L. Cooper, Ph.D., Geologic Editor 

 Dorothy E. Rose, B.S., Technical Editor 

 Meredith M. Calkins, Geologic Draftsman 

 Beulah Featherstone, B.F.A., Asst. Geologic 



Draftsman 

 Willis L. Busch, Principal Technical Assistant 

 Portia Allyn Smith, Technical Files Clerk 

 Leslie D. Vaughan, Asst. Photographer 



Assistant Chief Chemist 

 Chief Chemist. 



interim of absence of 



Consultants: Ceramics, Cullen W. Parmelee, M.S., D.Sc, and Ralph K. Hursh, B.S., University of Illinois 



Mechanical Engineering, Seichi Konzo, M.S., University of Illinois 

 Topographic Mapping in Cooperation with the United States Geological Survey. 

 This report is a contribution of the Stratigraphy and Paleontology Division. 



July 15, 1945 



