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