Geography
Arizona
30 results
Michigan
27 results
United States
16 results
England
12 results
Chile
10 results
Montana
10 results
Alaska
8 results
Butte
8 results
Great Britain
8 results
Upper Peninsula
8 results
Cornwall (County)
7 results
Vermont
7 results
Zambia
7 results
Papua New Guinea
6 results
Australia
5 results
California
5 results
Orange County
5 results
Butte (Mont.)
4 results
New Mexico
4 results
Superior, Lake
4 results
British Columbia
3 results
Cardiganshire
3 results
Copiapó Region
3 results
Keweenaw Peninsula
3 results
New Jersey
3 results
Oregon
3 results
Schuyler Copper Mine (Second River, N.J.)
3 results
Washington (State)
3 results
Afghanistan
2 results
Appalachian Mountains
2 results
Appalachian Region
2 results
Bougainville Island
2 results
Bougainville Island (Papua New Guinea)
2 results
Bristol Bay
2 results
Bristol Bay (Alaska)
2 results
Central African Copperbelt (Congo and Zambia)
2 results
Copiapó Region (Chile)
2 results
Copperbelt Province
2 results
Cornwall (England : County)
2 results
Coronado National Forest (Ariz. and N.M.)
2 results
Fly River
2 results
Globe Region
2 results
Israel
2 results
Kasaan Peninsula
2 results
Keweenaw Peninsula (Mich.)
2 results
Nevada
2 results
Pima County
2 results
Pinal County
2 results
Pinal Creek Watershed
2 results
Santa Rita
2 results
more…