Data / Mines / Oregon / Nonmetal mines
Nonmetal mineral mines in Oregon: 22 open mines
MSHA lists 22 open nonmetal mineral mines in Oregon, run by 20 operators and employing 173 people. Since January 1, 2022 its inspectors issued 242 citations and orders there with $51,108 in proposed penalties, and operators reported 9 injury or illness cases. The operators with the most open mines are Imerys Perlite USA, Inc; U.S. Silica Company, LLC; Millbank Materials USA. Data from MSHA, November 6, 2026.
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- Open mines
- 22
- Operators
- 20
- Employees
- 173
- Intermittent
- 11
- Active
- 10
- Temporarily Idled
- 1
- Mines run by individuals, counted and not listed
- 4
- Citations and orders since January 1, 2022
- 242
- Significant and substantial
- 33 (13.6%)
- Closure orders
- 4
- High negligence or reckless
- 7
- Proposed penalties
- $51,108
- Amount paid so far
- $42,571
- Inspections
- 197
- Inspector hours on site
- 1,010
- Citations per inspection
- 1.23 (all mines 2.30)
- Accident reports
- 9
- Injury and illness cases
- 9
- Fatalities
- 0
- Latest MSHA record
- October 23, 2026
Operators with the most open mines in 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 |
|---|---|---|---|---|---|
| Imerys Perlite USA, Inc | 2 | 16 | 41 | $8,812 | 0 |
| U.S. Silica Company, LLC | 2 | 70 | 19 | $2,790 | 3 |
| Millbank Materials USA | 1 | 12 | 35 | $7,820 | 3 |
| Gma Garnet (USA) Corp | 1 | 16 | 27 | $4,732 | 0 |
| South Chemult Pumice Resources LLC. | 1 | 3 | 20 | $5,939 | 0 |
| Pure Mountain LLC | 1 | 3 | 19 | $6,996 | 0 |
| Mark Latham Excavation | 1 | 4 | 15 | $2,475 | 0 |
| Central Oregon Bentonite Company | 1 | 3 | 12 | $2,443 | 0 |
| Dog Lake Construction Inc. | 1 | 2 | 12 | $1,756 | 0 |
| CalPortland Company | 1 | 7 | 5 | $1,267 | 2 |
| Anderson Rock LLC | 1 | 3 | 3 | $1,182 | 0 |
| Double Eagle Mining LLC | 1 | 2 | 3 | $444 | 0 |
| Dust Devil Mining Company | 1 | 2 | 3 | $427 | 0 |
| North Central Construction, Inc. | 1 | 3 | 3 | $435 | 0 |
| Sun Summit Sunstones LLC | 1 | 2 | 1 | $151 | 0 |
| Desert Sun Mining and Gems, Inc. | 1 | 12 | 0 | $0 | 0 |
Operators with the most citations in 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 |
|---|---|---|---|---|---|
| Imerys Perlite USA, Inc | 2 | 16 | 41 | $8,812 | 0 |
| Millbank Materials USA | 1 | 12 | 35 | $7,820 | 3 |
| Gma Garnet (USA) Corp | 1 | 16 | 27 | $4,732 | 0 |
| South Chemult Pumice Resources LLC. | 1 | 3 | 20 | $5,939 | 0 |
| U.S. Silica Company, LLC | 2 | 70 | 19 | $2,790 | 3 |
| Pure Mountain LLC | 1 | 3 | 19 | $6,996 | 0 |
| Mark Latham Excavation | 1 | 4 | 15 | $2,475 | 0 |
| Central Oregon Bentonite Company | 1 | 3 | 12 | $2,443 | 0 |
| Dog Lake Construction Inc. | 1 | 2 | 12 | $1,756 | 0 |
| CalPortland Company | 1 | 7 | 5 | $1,267 | 2 |
| Anderson Rock LLC | 1 | 3 | 3 | $1,182 | 0 |
| Double Eagle Mining LLC | 1 | 2 | 3 | $444 | 0 |
| Dust Devil Mining Company | 1 | 2 | 3 | $427 | 0 |
| North Central Construction, Inc. | 1 | 3 | 3 | $435 | 0 |
| Sun Summit Sunstones LLC | 1 | 2 | 1 | $151 | 0 |
| Desert Sun Mining and Gems, Inc. | 1 | 12 | 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 |
|---|---|---|---|---|---|
| Millbank Materials USA, LTD | Millbank Materials USA | Multnomah County, OR | Olivine | 12 | 35 |
| Gma Garnet (USA) Corp | Gma Garnet (USA) Corp | Coos County, OR | Sand, industrial | 16 | 27 |
| Tucker Hill Mill | Imerys Perlite USA, Inc | Lake County, OR | Perlite | 11 | 21 |
| Tucker Hill Quarry | Imerys Perlite USA, Inc | Lake County, OR | Perlite | 5 | 20 |
| South Chemult Pumice Resources LLC | South Chemult Pumice Resources LLC. | Klamath County, OR | Pumice | 3 | 20 |
| De-source | Pure Mountain LLC | Malheur County, OR | Diatomaceous earth (diatomite) | 3 | 19 |
| Celatom Plant | U.S. Silica Company, LLC | Malheur County, OR | Diatomaceous earth (diatomite) | 53 | 17 |
| Plant #1-Roll Crusher/Powerscrn | Mark Latham Excavation | Deschutes County, OR | Pumice | 4 | 15 |
| Star #1-2-3 | Central Oregon Bentonite Company | Crook County, OR | Bentonite | 3 | 12 |
| Deadman Pit | Dog Lake Construction Inc. | Lake County, OR | Sand, industrial | 2 | 12 |
| Sanderling Dredge | CalPortland Company | Columbia County, OR | Sand, industrial | 7 | 5 |
| Plant #1 | Anderson Rock LLC | Umatilla County, OR | Sand, industrial | 3 | 3 |
| Portable Crusher #5 | North Central Construction, Inc. | Umatilla County, OR | Sand, industrial | 3 | 3 |
| Dust Devil Mining Company | Dust Devil Mining Company | Lake County, OR | Gemstones | 2 | 3 |
| Double Eagle Mining | Double Eagle Mining LLC | Lake County, OR | Gemstones | 2 | 3 |
| Celatom Mine | U.S. Silica Company, LLC | Malheur County, OR | Diatomaceous earth (diatomite) | 17 | 2 |
| Sun Summit | Sun Summit Sunstones LLC | Harney County, OR | Gemstones | 2 | 1 |
| Ponderosa Mine | Desert Sun Mining and Gems, Inc. | Harney County, OR | Gemstones | 12 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Sand, industrial | 6 | 27.3% |
| Gemstones | 6 | 27.3% |
| Diatomaceous earth (diatomite) | 3 | 13.6% |
| Perlite | 2 | 9.1% |
| Pumice | 2 | 9.1% |
| Misc. nonmetallic mnls. | 1 | 4.5% |
| Bentonite | 1 | 4.5% |
| Olivine | 1 | 4.5% |
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 | 33 | 5 | $8,121 | 1 |
| 2023 | 50 | 2 | $7,787 | 1 |
| 2024 | 68 | 14 | $14,167 | 1 |
| 2025 | 31 | 1 | $6,138 | 5 |
| 2026 | 60 | 11 | $14,895 | 1 |
Standards cited most at nonmetal mineral mines in 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 50.30 | Reporting of accidents, injuries and illnesses | 27 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 22 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 20 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 16 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 15 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.12002 | Surface metal and nonmetal mines | 7 |
| 30 CFR 47.44 | Hazard communication | 6 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 5 |
Injury and illness cases at nonmetal mineral mines in Oregon
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Permanent disability | 1 |
| Days away from work or restricted activity | 6 |
| No lost time, or an occupational illness | 2 |
What the accident reports at nonmetal mineral mines in Oregon describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 5 |
| Slip or fall of person | 2 |
| Striking or bumping | 1 |
| Exploding vessels under pressure | 1 |
Equipment named in accident reports at nonmetal mineral mines in Oregon
| Equipment | Reports |
|---|---|
| Front-end loader | 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.