All 20 drilling companies that have filed a well log in Roosevelt County in the last ten years, 12 of them in the last five, ranked by recent work.
| Company | Last 5 yrs | Last 10 yrs | All time | Latest | First on file |
|---|---|---|---|---|---|
| Yellow Jacket Drilling Services Llc | 24 | 24 | 24 | 2024 | 2024 |
| Badger Drilling & Well Service Llc | 17 | 17 | 17 | 2026 | 2025 |
| Montana Salinity Control Association | 15 | 80 | 336 | 2021 | 1994 |
| Hansen Environmental Drilling | 7 | 17 | 147 | 2024 | 1991 |
| Agri Industries Inc | 4 | 18 | 275 | 2022 | 1992 |
| West Central Environmental Consultants | 4 | 9 | 9 | 2023 | 2020 |
| Sharp Drilling Inc | 3 | 12 | 66 | 2022 | 1992 |
| Cascade Drilling | 3 | 3 | 3 | 2025 | 2025 |
| Pirtz Waterworx Llc | 2 | 2 | 2 | 2021 | 2021 |
| Wwc Engineering | 1 | 1 | 1 | 2021 | 2021 |
| Mt Bureau Of Mines & Geology | 1 | 1 | 15 | 2025 | 1983 |
| Solid Waterwell Drilling | 1 | 1 | 1 | 2023 | 2023 |
| Hansen Drilling | 0 | 6 | 15 | 2016 | 2008 |
| Haz Tech Drilling Inc | 0 | 5 | 19 | 2016 | 2012 |
| Dls Contracting | 0 | 5 | 32 | 2018 | 2012 |
| Mark Adair Drilling | 0 | 4 | 331 | 2018 | 1979 |
| Clayton Larson | 0 | 2 | 12 | 2018 | 2011 |
| Mt Dept Of Transportation | 0 | 1 | 147 | 2020 | 1995 |
| Sk Geotechnical Co | 0 | 1 | 9 | 2018 | 2009 |
| Petrie Pump & Drilling | 0 | 1 | 19 | 2018 | 1985 |
Source: MBMG Ground Water Information Center well logs. A count of public records, not a recommendation. How to check a driller. Depth and yield for Roosevelt County: Montana Water Report.
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