Region
United States
53
California
3
Iraq
3
Alaska
2
China
2
Cuba
2
Israel
2
New York
2
New York (State)
2
Afghanistan
1
Baltimore
1
Detroit
1
Developing countries
1
Fort Campbell (Ky. and Tenn.)
1
Hanford Site (Wash.)
1
Ho Chi Minh City
1
India
1
Iran
1
Italy
1
Lebanon
1
Los Alamos
1
Maryland
1
Massachusetts
1
Michigan
1
Montana
1
New Mexico
1
North America
1
Northwest, Pacific
1
Oakland
1
Pennsylvania
1
Roane County
1
Russia (Federation)
1
Tennessee
1
Texas
1
Vietnam
1
Washington (State)
1
Wasington (State)
1
Wyoming
1