1. Indian Head Mine 



2. Absaloka Mine 



3^ Rosebud (Colstrip) Mine 



4. Big Sky Mine 



5. West Decker Mine 



6. Belle Ayr South Mine 



7. Dave Johnston Mine 



8. Rosebud (Hanna), Medicine Bow, 



and Seminoe 1 and 2 Mines 



9. Elkol -Sorenson Mine 

 10. Energy 1, 2, and 3 Mines 

 11 Seneca 1 and 2 Mines 



12. Weber and Chappell Mines 



13. Heico and Reminger Mines 



14. Navajo Mine 



15. San Juan Mine 



16. Black Mesa and Kayenta Mines 



17. McKinley Mine 



U lUU m 300 400 500 600 KILOMETERS 



Figure 15.-Mean annual precipitation for the western coal region States based on period 1931-60. (Source: U.S. Department 

 of Commerce, 1968, Climatic Atlas of tfie United States.) 



30 



