Data / Mines / Imerys Filtration Minerals, Inc.
Imerys Filtration Minerals, Inc.: 328 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Imerys Filtration Minerals, Inc. (MSHA operator ID L12218) operates 4 open mines with 266 employees in Washington, California, Nevada, mostly diatomaceous earth (diatomite). Since January 1, 2022 MSHA inspectors issued it 328 citations and orders with $480,987 in proposed penalties, and it reported 20 injury or illness cases. Data from MSHA, November 6, 2026.
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- MSHA operator ID
- L12218
- Open mines
- 4
- Employees at open mines
- 266
- States
- Washington, California, Nevada
- Citations and orders since January 1, 2022
- 328
- Significant and substantial
- 82 (25.0%)
- Closure orders
- 6
- High negligence or reckless
- 37
- Proposed penalties
- $480,987
- Amount paid so far
- $480,101
- Inspections
- 59
- Inspector hours on site
- 1,049
- Citations per inspection
- 5.56 (all mines 2.30)
- Accident reports
- 20
- Injury and illness cases
- 20
- Fatalities
- 0
- Latest MSHA record
- October 25, 2026
Open mines of Imerys Filtration Minerals, Inc.
Ranked by citations since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Imerys Lompoc Plant | Imerys Filtration Minerals, Inc. | Santa Barbara County, CA | Diatomaceous earth (diatomite) | 198 | 249 |
| Quincy WA Plant | Imerys Filtration Minerals, Inc. | Grant County, WA | Misc. nonmetallic mnls. | 42 | 67 |
| Fernley Plant | Imerys Filtration Minerals, Inc. | Lyon County, NV | Diatomaceous earth (diatomite) | 16 | 6 |
| Quincy WA Mine | Imerys Filtration Minerals, Inc. | Grant County, WA | Diatomaceous earth (diatomite) | 10 | 6 |
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 | 44 | 15 | $32,570 | 6 |
| 2023 | 63 | 17 | $128,114 | 2 |
| 2024 | 92 | 22 | $198,946 | 4 |
| 2025 | 65 | 14 | $41,692 | 3 |
| 2026 | 64 | 14 | $79,665 | 5 |
Standards cited most at Imerys Filtration Minerals, Inc.
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 56.20003 | Surface metal and nonmetal mines | 35 |
| 30 CFR 56.16001 | Surface metal and nonmetal mines | 27 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 26 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 25 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 20 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 17 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.12002 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 9 |
| 30 CFR 47.41 | Hazard communication | 9 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.11002 | Surface metal and nonmetal mines | 6 |
Injury and illness cases at Imerys Filtration Minerals, Inc.
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 | 17 |
| No lost time, or an occupational illness | 2 |
What the accident reports at Imerys Filtration Minerals, Inc. describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 6 |
| Handling of materials | 4 |
| Machinery | 3 |
| Other | 3 |
| Stepping or kneeling on object | 1 |
| Powered haulage | 1 |
| Handtools (nonpowered) | 1 |
| Electrical | 1 |
Equipment named in accident reports at Imerys Filtration Minerals, Inc.
| Equipment | Reports |
|---|---|
| Bulldozer | 3 |
| Packaging machine | 2 |
| Trucks | 2 |
| Hand tools (not powered) | 1 |
| Front-end loader | 1 |
| Welding machine | 1 |
Commodities
| Main commodity | Open mines |
|---|---|
| Diatomaceous earth (diatomite) | 3 |
| Misc. nonmetallic mnls. | 1 |
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.