Region
Alaska
Matanuska River Valley
5
United States
4
Bering River
3
Colorado
3
Pennsylvania
3
Kenai Peninsula
2
Lisburne, Cape
2
Alaska Range
1
Alaska, Southcentral
1
Alaska, Southeast
1
Arizona
1
Beluga River Coalfield
1
Beluga River Region
1
California
1
Controller Bay Region
1
Cripple Creek
1
Cripple Creek-Victor Gold Mining District
1
Fremont County
1
Galena
1
Homer District
1
Houston
1
Illinois
1
Jarvis Creek region
1
Kansas
1
Maine
1
Matanuska Coal Field (Alaska)
1
Minnesota
1
Natrona County
1
Nenana
1
Nenana Coalfield
1
North Slope
1
Norton Bay-Nulato region
1
Ohio
1
Oklahoma
1
Oregon
1
Pacific Coast
1
Prudhoe Bay Region
1
Sagavanirktok Formation (Alaska)
1
Seward Peninsula
1
Texas
1
Utah
1
Utukok-Corwin Region
1
Wishbone Hill District
1
Wyoming
1