Region
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Navajo Nation, Arizona, New Mexico and Utah
1
Nevada
3
Nevada National Security Site
1
Nevada National Security Site (Nev.)
1
New Mexico
1
Oak Ridge
1
Ohio
4
Oregon
2
Pakistan
1
Pennsylvania
5
Pryp'i︠a︡tʹ
1
Rongelap Atoll
1
Rongelap Atoll (Marshall Islands)
1
Russia (Federation)
1
Saint Louis County
1
Saint Louis Metropolitan Area
1
San Bernardino County
1
San Bernardino National Wildlife Refuge
1
San Juan Mountains (Colo. and N.M.)
1
Sarasota County
1
Semeĭ
1
Socorro County
1
Solar system
2
Southwest, New
3
Soviet Union
2
Sun
5
Tennessee
2
Texas
1
Trinity Site (N.M.)
1
USSR
1
Ukraine
8
United Kingdom
1
United States
217
United States, West
1
Utah
2
Uzbekistan
4
Washington (State)
7
West (U.S.)
6