CONTRIBUTORS TO SUBSURFACE GEOLOGIC METHODS 



L. W. LeRoy, Associate Professor of Geology, Colorado School of Mines, 



Golden, Colorado, Compiler and Editor 

 George W. Johnson, Department of English, Colorado School of Mines, Golden, 



Colorado, Editor 

 0. E. Barstow, Dowell Incorporated, Tulsa, Oklahoma 

 C. M. Bryant, Dowell Incorporated, Tulsa, Oklahoma 

 John G. Caran, Core Engineer, San Antonio, Texas 

 Kirk Carlsten, Mechanical Engineer, Eastman Oil Well Survey Company, 



Denver, Colorado 

 S. R. B. Cooke, Department of Metallurgy and Mineral Dressing, University 



of Minnesota, Minneapolis, Minnesota 

 James G. Crawford, Chemical and Geological Laboratories, Casper, Wyoming 

 Jack De Ment, De Ment Laboratories, Portland, Oregon 

 H. G. Doll, Schlumberger Well Surveying Corporation, Houston, Texas 

 George H. Fancher, Department of Petroleum Engineering, University of 



Texas, Austin, Texas 

 R. D. Ford, Schlumberger Well Surveying Corporation, Houston, Texas 

 M. G. Frey, Department of Geology, University of Cincinnati, Cincinnati, Ohio 

 John W. Gabelman, Colorado Fuel and Iron Corporation, Pueblo, Colorado 

 R. J. Gill, Geologic Survey Company, Wichita, Kansas 



R. G. Hamilton, Schlumberger Well Surveying Corporation, Houston, Texas 

 P. N. Hardin, Dowell Incorporated, Tulsa, Oklahoma 



W. E. Hassebroek, Halliburton Oil Well Cementing Company, Duncan, Okla- 

 homa 

 Sigurd Kermit Herness, Department of Geology, Colorado School of Mines, 



Golden, Colorado 

 John M. Hills, Consulting Geologist, Midland, Texas 



H. A. Ireland, Department of Geology, University of Kansas, Lawrence, Kansas 

 J. Harlan Johnson, Department of Geology, Colorado School of Mines, Golden, 



Colorado 

 F. Walker Johnson, Creole Petroleum Corporation, Maracaibo, Venezuela 

 Paul F. Kerr, Department of Geology, Columbia University, New York, New 



York 

 Truman H. Kuhn, Department of Geology, Colorado School of Mines, Golden, 



Colorado 

 J. L. Kulp, Department of Geology, Columbia University, New York, New York 

 H. L. Landua, Humble Oil & Refining Company, Houston, Texas 

 Arthur Langton, Baroid Sales Division, Los Angeles, California 

 Julian W. Low, The California Company, Denver, Colorado 

 V. J. Mercier, Mountain Iron and Supply Company, Wichita, Kansas 

 Carl A. Moore, Department of Geology, University of Oklahoma, Norman, 



Oklahoma 

 J. B. Murdoch, Jr., Eastman Oil Well Survey Company, Denver, Colorado 

 P. B. Nichols, Geolograph Company, Incorporated, Oklahoma City, Oklahoma 

 W. D. Owsley, Halliburton Oil Well Cementing Company, Duncan, Oklahoma 

 L. L. Payne, Hughes Tool Company, Houston, Texas 



Gordon Rittenhouse, Department of Geology, University of Cincinnati, Cin- 

 cinnati, Ohio 

 George L. Robb, United States Bureau of Reclamation, Denver, Colorado 

 N. Cyril Schieltz, United States Bureau of Reclamation, Denver, Colorado 



