Geography
United States
42 results
Pennsylvania
37 results
Alaska
22 results
West Virginia
15 results
Florida
11 results
California
10 results
Colorado
10 results
Idaho
10 results
Alabama
9 results
Minnesota
9 results
Washington (State)
8 results
Appalachian Region
5 results
Spokane Indian Reservation
5 results
Cambria County
4 results
Mesaba Range
4 results
Missouri
4 results
Montana
4 results
Virginia
4 results
Wyoming
4 results
Georgia
3 results
Gulf States
3 results
Illinois
3 results
Indiana
3 results
Kasaan Peninsula
3 results
Kasaan Peninsula (Alaska)
3 results
Michigan
3 results
New Mexico
3 results
Oklahoma
3 results
Utah
3 results
West (U.S.)
3 results
Arizona
2 results
Armstrong County
2 results
Coeur d'Alene Region
2 results
Ebensburg Region
2 results
Galena Region
2 results
Haskell County
2 results
Homestake Mine (S.D.)
2 results
Imperial Valley
2 results
Indiana County
2 results
Kentucky
2 results
Le Flore County
2 results
Lucky Friday Mine Region
2 results
Mesabi Range
2 results
Oak Grove Region
2 results
Pacific Ocean
2 results
Piceance Creek Basin
2 results
Salton Sea
2 results
Seward Peninsula
2 results
South Dakota
2 results
Alaska Peninsula
1 results
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