Data / Mines / Oregon / Marion County
Mines in Marion County, Oregon: 15 open mines
MSHA lists 15 open mines in Marion County, Oregon, run by 7 operators and employing 94 people. Since January 1, 2022 its inspectors issued 141 citations and orders there with $29,309 in proposed penalties, and operators reported 22 injury or illness cases. The operators with the most open mines are Central Pre-Mix Concrete Co.; Knife River Corporation Northwest; Chavarria Construction Inc.. Data from MSHA, November 6, 2026.
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- Open mines
- 15
- Operators
- 7
- Employees
- 94
- Active
- 13
- Intermittent
- 2
- Citations and orders since January 1, 2022
- 141
- Significant and substantial
- 11 (7.8%)
- Closure orders
- 5
- High negligence or reckless
- 14
- Proposed penalties
- $29,309
- Amount paid so far
- $27,720
- Inspections
- 148
- Inspector hours on site
- 795
- Citations per inspection
- 0.95 (all mines 2.30)
- Accident reports
- 26
- Injury and illness cases
- 22
- Fatalities
- 0
- Latest MSHA record
- November 3, 2026
Operators with the most open mines in Marion 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 |
|---|---|---|---|---|---|
| Central Pre-Mix Concrete Co. | 7 | 53 | 50 | $7,391 | 17 |
| Knife River Corporation Northwest | 3 | 24 | 19 | $3,491 | 4 |
| Chavarria Construction Inc. | 1 | 1 | 25 | $6,820 | 0 |
| Stokes Crushing LLC | 1 | 2 | 24 | $8,266 | 0 |
| Aggregate Resource Crushing, LLC | 1 | 4 | 9 | $1,341 | 1 |
| K&e Excavating Inc | 1 | 5 | 7 | $987 | 0 |
| Wilsonville Concrete Products | 1 | 5 | 7 | $1,013 | 0 |
Operators with the most citations in Marion 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 |
|---|---|---|---|---|---|
| Central Pre-Mix Concrete Co. | 7 | 53 | 50 | $7,391 | 17 |
| Chavarria Construction Inc. | 1 | 1 | 25 | $6,820 | 0 |
| Stokes Crushing LLC | 1 | 2 | 24 | $8,266 | 0 |
| Knife River Corporation Northwest | 3 | 24 | 19 | $3,491 | 4 |
| Aggregate Resource Crushing, LLC | 1 | 4 | 9 | $1,341 | 1 |
| K&e Excavating Inc | 1 | 5 | 7 | $987 | 0 |
| Wilsonville Concrete Products | 1 | 5 | 7 | $1,013 | 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 |
|---|---|---|---|---|---|
| Portable 2 | Chavarria Construction Inc. | Marion County, OR | Crushed, broken stone | 1 | 25 |
| Portable #1 | Stokes Crushing LLC | Marion County, OR | Crushed, broken stone | 2 | 24 |
| Reed Pit | Knife River Corporation Northwest | Marion County, OR | Construction sand and gravel | 17 | 16 |
| RiverBend Materials Windsor | Central Pre-Mix Concrete Co. | Marion County, OR | Crushed, broken stone | 20 | 12 |
| RiverBend Materials Turner South | Central Pre-Mix Concrete Co. | Marion County, OR | Construction sand and gravel | 7 | 12 |
| Allied Rock Portable Crusher #1 | Central Pre-Mix Concrete Co. | Marion County, OR | Crushed, broken stone | 5 | 11 |
| RiverBend Materials RiverBend West | Central Pre-Mix Concrete Co. | Marion County, OR | Construction sand and gravel | 9 | 9 |
| Plant #1 | Aggregate Resource Crushing, LLC | Marion County, OR | Crushed, broken stone | 4 | 9 |
| WCP Inc | Wilsonville Concrete Products | Marion County, OR | Construction sand and gravel | 5 | 7 |
| K & E Rock Products | K&e Excavating Inc | Marion County, OR | Crushed, broken stone | 5 | 7 |
| RiverBend Materials Hilroy | Central Pre-Mix Concrete Co. | Marion County, OR | Construction sand and gravel | 8 | 3 |
| Keizer Pit & Plant | Knife River Corporation Northwest | Marion County, OR | Construction sand and gravel | 4 | 3 |
| Allied Rock Portable Crusher #2 | Central Pre-Mix Concrete Co. | Marion County, OR | Crushed, broken stone | 2 | 3 |
| Rogue Portable #10 | Knife River Corporation Northwest | Marion County, OR | Crushed, broken stone | 3 | 0 |
| Umpqua Mobile Crushing | Central Pre-Mix Concrete Co. | Marion County, OR | Crushed, broken stone | 2 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken stone | 9 | 60% |
| Construction sand and gravel | 6 | 40% |
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 | 26 | 2 | $7,254 | 3 |
| 2023 | 29 | 3 | $5,594 | 4 |
| 2024 | 31 | 1 | $5,848 | 7 |
| 2025 | 23 | 2 | $6,048 | 3 |
| 2026 | 32 | 3 | $4,565 | 5 |
Standards cited most at mines in Marion 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 56.14100 | Surface metal and nonmetal mines | 19 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 10 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 7 |
| 30 CFR 50.20 | Reporting of accidents, injuries and illnesses | 5 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.4101 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12023 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 3 |
Injury and illness cases at mines in Marion County, Oregon
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 18 |
| No lost time, or an occupational illness | 4 |
What the accident reports at mines in Marion County, Oregon describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 15 |
| Other | 5 |
| Slip or fall of person | 2 |
| Handtools (nonpowered) | 2 |
| Fire | 1 |
| Stepping or kneeling on object | 1 |
Equipment named in accident reports at mines in Marion County, Oregon
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 2 |
| Dredge | 1 |
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.