Data / Mines / Oregon / Crook County
Mines in Crook County, Oregon: 13 open mines
MSHA lists 13 open mines in Crook County, Oregon, run by 12 operators and employing 37 people. Since January 1, 2022 its inspectors issued 131 citations and orders there with $51,385 in proposed penalties, and operators reported no injury or illness cases. The operators with the most open mines are 4 R Equipment LLC; Pulguero Rock and Stone Co, LLC; Groves Holdings LLC. Data from MSHA, November 6, 2026.
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- Open mines
- 13
- Operators
- 12
- Employees
- 37
- Intermittent
- 9
- Active
- 4
- Mines run by individuals, counted and not listed
- 1
- Citations and orders since January 1, 2022
- 131
- Significant and substantial
- 21 (16.0%)
- Closure orders
- 6
- High negligence or reckless
- 10
- Proposed penalties
- $51,385
- Amount paid so far
- $50,566
- Inspections
- 71
- Inspector hours on site
- 360
- Citations per inspection
- 1.85 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- September 15, 2026
Operators with the most open mines in Crook County, Oregon
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| 4 R Equipment LLC | 2 | 9 | 19 | $4,505 | 0 |
| Pulguero Rock and Stone Co, LLC | 1 | 1 | 28 | $22,749 | 0 |
| Groves Holdings LLC | 1 | 3 | 17 | $2,690 | 0 |
| Central Oregon Bentonite Company | 1 | 3 | 12 | $2,443 | 0 |
| Clint Woodward Construction LLC | 1 | 1 | 12 | $12,767 | 0 |
| Adam's Timber Service LLC | 1 | 3 | 10 | $1,458 | 0 |
| Williams Aggregate, Inc | 1 | 3 | 10 | $1,442 | 0 |
| Prineville Ready Mix LLC | 1 | 6 | 9 | $1,208 | 0 |
| Terra Hydr, Inc | 1 | 2 | 8 | $1,225 | 0 |
| Smaf Construction LLC | 1 | 2 | 6 | $898 | 0 |
| Jade Excavation | 1 | 2 | 0 | $0 | 0 |
Operators with the most citations in Crook County, Oregon
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Pulguero Rock and Stone Co, LLC | 1 | 1 | 28 | $22,749 | 0 |
| 4 R Equipment LLC | 2 | 9 | 19 | $4,505 | 0 |
| Groves Holdings LLC | 1 | 3 | 17 | $2,690 | 0 |
| Central Oregon Bentonite Company | 1 | 3 | 12 | $2,443 | 0 |
| Clint Woodward Construction LLC | 1 | 1 | 12 | $12,767 | 0 |
| Adam's Timber Service LLC | 1 | 3 | 10 | $1,458 | 0 |
| Williams Aggregate, Inc | 1 | 3 | 10 | $1,442 | 0 |
| Prineville Ready Mix LLC | 1 | 6 | 9 | $1,208 | 0 |
| Terra Hydr, Inc | 1 | 2 | 8 | $1,225 | 0 |
| Smaf Construction LLC | 1 | 2 | 6 | $898 | 0 |
| Jade Excavation | 1 | 2 | 0 | $0 | 0 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Pulguero | Pulguero Rock and Stone Co, LLC | Crook County, OR | Crushed, broken stone | 1 | 28 |
| GB Resources LLC | Groves Holdings LLC | Crook County, OR | Construction sand and gravel | 3 | 17 |
| Portable #1 | 4 R Equipment LLC | Crook County, OR | Crushed, broken stone | 5 | 16 |
| Star #1-2-3 | Central Oregon Bentonite Company | Crook County, OR | Bentonite | 3 | 12 |
| Portable Crusher | Clint Woodward Construction LLC | Crook County, OR | Crushed, broken stone | 1 | 12 |
| Williams Aggregate, Inc. | Williams Aggregate, Inc | Crook County, OR | Construction sand and gravel | 3 | 10 |
| Adam's Timber Service LLC | Adam's Timber Service LLC | Crook County, OR | Construction sand and gravel | 3 | 10 |
| Willams | Prineville Ready Mix LLC | Crook County, OR | Construction sand and gravel | 6 | 9 |
| Grizzly Land & Resource | Terra Hydr, Inc | Crook County, OR | Crushed, broken stone | 2 | 8 |
| Smaf | Smaf Construction LLC | Crook County, OR | Crushed, broken stone | 2 | 6 |
| Portable 2020 | 4 R Equipment LLC | Crook County, OR | Crushed, broken stone | 4 | 3 |
| Jade | Jade Excavation | Crook County, OR | Crushed, broken stone | 2 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken stone | 7 | 53.8% |
| Construction sand and gravel | 5 | 38.5% |
| Bentonite | 1 | 7.7% |
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 12 | 4 | $3,366 | 0 |
| 2023 | 38 | 6 | $16,722 | 0 |
| 2024 | 22 | 2 | $3,736 | 0 |
| 2025 | 29 | 1 | $4,612 | 0 |
| 2026 | 30 | 8 | $22,949 | 0 |
Standards cited most at mines in Crook County, Oregon
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 15 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 13 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 11 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.1000 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.4101 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 2 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.