Region
United States
2,950
Washington (D.C.)
59
California
19
Foreign countries
13
Russia (Federation)
12
New Mexico
11
China
10
Iraq
10
Micronesia (Federated States)
9
New York (State)
9
Marshall Islands
8
Alaska
7
Developing countries
7
Florida
7
Colombia
6
Former Soviet republics
6
New York
6
Washington (State)
6
America
5
Mexico
5
Nevada
5
Yucca Mountain
5
Europe
4
États-Unis
4
Great Britain
4
Great Lakes
4
Haiti
4
Kentucky
4
Northwest, Pacific
4
Oregon
4
Paducah
4
Pennsylvania
4
Tennessee
4
Capitol Hill (Washington, D.C.)
3
Caribbean Area
3
Colorado
3
France
3
Latin America
3
Los Alamos Region
3
Middle East
3
Ohio
3
Washington Region
3
Afghanistan
2
Africa, Southern
2
Alabama
2
Cambodia
2
Canada
2
Columbia River Watershed
2
Connecticut
2
Denver
2
more ...