1. Trillium Corporation 490 N 31st St, Billings, MT 59101 Coordinate: 45.78358,-108.51318 Phone: (406) 254-0294
2. Johnson Geophysical 2812 1st Ave N Ste 424, Billings, MT 59101 Coordinate: 45.78167,-108.50585 Phone: (406) 255-0805