- United States23
- United States, West Virginia17
- United States, Wyoming, Carbon County, Hanna5
- United States, Tennessee2
- United States, Virginia, Wise County2
- United States, Wyoming2
- United States, Illinois, St. Clair County, Marissa1
- United States, Kentucky1
- United States, Michigan, Monroe County, Monroe1
- United States, Montana, Rosebud County, Colstrip1
- United States, Pennsylvania, Allegheny County, Bruceton1
- United States, Washington, Pierce County, Fort Lewis1
- United States, West Virginia, Wyoming County, Itmann1
- United States, Wyoming, Lincoln County, Frontier1
