Geological Survey (U.S.) 1,666 Geological Survey (U.S.), 1,024 United States. Bureau of Land Management 264 United States. Bureau of Mines 257 National Operations Center (U.S.) 195 Colorado Geological Survey 95 U.S. Atomic Energy Commission. Division of Raw Materials 94 Cobb, Edward H. 1916-1983 91 National Operations Center (U.S.), 62 United States. Bureau of Land Management, 62 United States. Bureau of Land Management. Montana State Office 61 U.S. Atomic Energy Commission. Raw Materials Operations 58 United States. Bureau of Land Management. New Mexico State Office 51 SpringerLink (Online service) 47 United States. Bureau of Land Management. Wyoming State Office 43 United States. Bureau of Land Management. Colorado State Office 39 U.S. Atomic Energy Commission, 37 Afghan Geological Survey, 31 United States. Bureau of Land Management. Portland Service Center, 31 U.S. Task Force for Business and Stability Operations, 30 Davis, Philip A. 1950- 28 DeWitt, Ed 28 Smith, Philip S. 1877-1949 28 United States. Bureau of Land Management. Oregon State Office 26 Cappa, James A. 25 National Science and Technology Center (U.S.) 25 Diggles, M. F. 23 United States. Bureau of Mines, 23 United States. Interdepartmental Committee on Scientific and Cultural Cooperation, 23 Brooks, Alfred H. 1871-1924 22 U.S. Atomic Energy Commission 21 Bullock, John H. 19 United States. Bureau of Land Management. Montana State Office, 19 Illinois State Geological Survey 18 Lesure, Frank Gardner, 1927- 18 Evans, James George, 1938- 16 Keith, William J., 1933- 16 Tennessee. Division of Geology 16 United States. Bureau of Land Management. Alaska State Office, 16 California. Division of Mines and Geology 15 Hemborg, H. Thomas 15 Missouri. Division of Geology and Land Survey 15 Pearson, Robert Carl, 1926- 15 Schrader, Frank C. 1860-1944 15 Simons, Frank S. 1917- 15 Tennessee Valley Authority 15 United States. Bureau of Land Management. Oregon State Office, 15 Bell, Henry, 1923-1989 14 Conterminous United States Mineral Assessment Program 14 Keller, John W. 1964- 14 Lindgren, Waldemar, 1860-1939 14 United States. Congress. Senate. Committee on Interior and Insular Affairs 14 Anderson, Alfred L. 1900-1964 13 Pilcher, Steven H. 13 Pratt, Walden P. 13 Ransome, F. L. 1868-1935 13 Samson, Irma 13 Soulliere, Sandra J. 13 Toth, Margo I. 13 Adrian, Betty M. 12 California. Division of Mines 12 Hotz, Preston Enslow, 1913- 12 ScienceDirect (Online service) 12 Symons, Henry H. 1894-1975 12 United States. Central Intelligence Agency 12 Universidad Nacional Autónoma de México. Instituto de Geología, 12 Bauer, Herman L. 1925- 11 Campbell, Marius R. 1858-1940 11 Diggles, M. F., 11 Idaho Bureau of Mines and Geology 11 Loughlin, G. F. 1880-1946 11 Moffit, Fred H. 1874-1958? 11 Montana Bureau of Mines and Geology 11 Richter, Donald H. 11 Ross, Clyde P. 1891-1965, 11 United States. Bureau of Indian Affairs. Division of Energy and Mineral Resources 11 United States. Bureau of Land Management. New Mexico State Office, 11 Wyant, Donald G. 1918- 11 Cagney, Laura E., 10 Cathcart, James Bachelder, 1917- 10 Church, S. E. 10 Colorado School of Mines 10 Colorado. Bureau of Mines 10 Emmons, Samuel Franklin, 1841-1911 10 Garrison, Rachel E. 10 Hill, James M. 1884- 10 Johnson, Bruce R., 10 Mardirosian, Charles A. 10 Mexico. Dirección de Minas y Petróleo, 10 Nevada Bureau of Mines 10 Nokleberg, Warren J. 10 Peterson, Jocelyn A. 10 Ross, Clyde P. 1891-1965 10 Schrader, Frank C. 1860-1944, 10 Soulliere, Sandra J., 10 Staatz, Mortimer H. 1918-2004 10 Tasmania. Department of Mines 10 TerBest, Harry 10 Tooker, Edwin W., 1923-2013, 10 United States. Bureau of Land Management. Wyoming State Office, 10