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Region
- ArizonaCochise County2
- Ganymede (Satellite)2
- UtahIron County2
- WyomingAlbany County2
- WyomingPlatte County2
- Appalachian Basin1
- ArizonaChiricahua National Monument1
- ArizonaHualapai Indian Reservation1
- Arkansas1
- CaliforniaKern County1
- Chiricahua National Monument (Ariz.)1
- Cochise County (Ariz.)1
- ColoradoPiceance Creek Basin1
- FloridaKey Largo Region1
- Hubbard Brook Experimental Forest (N.H.)1
- IllinoisEast Saint Louis Region1
- Missouri1
- MissouriSaint Louis Region1
- NevadaElko County1
- NevadaGoshute Mountains1