- United States, West Virginia1,009
- United States, Kentucky1,008
- United States, North Carolina1,008
- United States, Pennsylvania1,008
- United States, Southern States1,008
- United States, Colorado, Las Animas County, Ludlow22
- United States10
- United States, Colorado7
- United States, Virginia, Russell County4
- United States, Colorado, Las Animas County, Trinidad3
- United States, Virginia, Dickenson County, McClure3
- United States, Tennessee, Anderson County, Coal Creek2
- United States, West Virginia, Marion County, Fairmont2
- United States, Colorado, Boulder County, Lafayette1
- United States, Kentucky, Pike County, Belfry1
- United States, North Carolina, Orange County, Chapel Hill1
- United States, Virginia, Wise County, Saint Paul1
- United States, West Virginia, Marion County, Monongah1
- United States, West Virginia, Monongalia County, Osage1
- United States, West Virginia, Preston County, Kingwood1
