Montana Bureau of Mines and Geology
https://www.mbmg.mtech.edu/MontanaGeology/geohazards/main.asp#gsc.tab=0
Contact
Address
Earthquake Studies Office
Montana Bureau of Mines and Geology
Montana Bureau of Mines and Geology
1300 West Park Street
Butte, MT 59701-8997Telephone
Voice: +1-406-496-4332
Fax: +1-406-496-4451