Data / Mines / Washington / Grant County
Mines in Grant County, Washington: 17 open mines
MSHA lists 17 open mines in Grant County, Washington, run by 13 operators and employing 90 people. Since January 1, 2022 its inspectors issued 255 citations and orders there with $105,543 in proposed penalties, and operators reported 9 injury or illness cases. The operators with the most open mines are Aaa Ready-Mix Inc; Imerys Filtration Minerals, Inc.; North Central Construction, Inc.. Data from MSHA, November 6, 2026.
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- Open mines
- 17
- Operators
- 13
- Employees
- 90
- Intermittent
- 8
- Active
- 6
- Temporarily Idled
- 2
- New Mine
- 1
- Mines run by individuals, counted and not listed
- 1
- Citations and orders since January 1, 2022
- 255
- Significant and substantial
- 34 (13.3%)
- Closure orders
- 9
- High negligence or reckless
- 11
- Proposed penalties
- $105,543
- Amount paid so far
- $68,401
- Inspections
- 131
- Inspector hours on site
- 726
- Citations per inspection
- 1.95 (all mines 2.30)
- Accident reports
- 9
- Injury and illness cases
- 9
- Fatalities
- 0
- Latest MSHA record
- October 27, 2026
Operators with the most open mines in Grant County, Washington
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 |
|---|---|---|---|---|---|
| Aaa Ready-Mix Inc | 3 | 4 | 8 | $1,166 | 0 |
| Imerys Filtration Minerals, Inc. | 2 | 52 | 73 | $30,691 | 8 |
| North Central Construction, Inc. | 2 | 13 | 33 | $8,474 | 0 |
| Callahan Ag, LLC. | 1 | 2 | 51 | $46,521 | 0 |
| Interstate Concrete and Asphalt Company | 1 | 2 | 18 | $2,575 | 1 |
| Segale Properties LLC | 1 | 2 | 18 | $4,234 | 0 |
| Tommer Construction Co Inc | 1 | 2 | 18 | $4,137 | 0 |
| RPC Gravel LLC | 1 | 3 | 12 | $1,808 | 0 |
| Central Washington Asphalt | 1 | 2 | 1 | $133 | 0 |
| Baseline Crushing Inc. | 1 | 2 | 0 | $0 | 0 |
| Quincy Rock Products, L.L.C. | 1 | 0 | 0 | $0 | 0 |
| Triple Threat Crushing | 1 | 3 | 0 | $0 | 0 |
Operators with the most citations in Grant County, Washington
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 Filtration Minerals, Inc. | 2 | 52 | 73 | $30,691 | 8 |
| Callahan Ag, LLC. | 1 | 2 | 51 | $46,521 | 0 |
| North Central Construction, Inc. | 2 | 13 | 33 | $8,474 | 0 |
| Interstate Concrete and Asphalt Company | 1 | 2 | 18 | $2,575 | 1 |
| Segale Properties LLC | 1 | 2 | 18 | $4,234 | 0 |
| Tommer Construction Co Inc | 1 | 2 | 18 | $4,137 | 0 |
| RPC Gravel LLC | 1 | 3 | 12 | $1,808 | 0 |
| Aaa Ready-Mix Inc | 3 | 4 | 8 | $1,166 | 0 |
| Central Washington Asphalt | 1 | 2 | 1 | $133 | 0 |
| Baseline Crushing Inc. | 1 | 2 | 0 | $0 | 0 |
| Quincy Rock Products, L.L.C. | 1 | 0 | 0 | $0 | 0 |
| Triple Threat Crushing | 1 | 3 | 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 |
|---|---|---|---|---|---|
| Quincy WA Plant | Imerys Filtration Minerals, Inc. | Grant County, WA | Misc. nonmetallic mnls. | 42 | 67 |
| Callahan Pit | Callahan Ag, LLC. | Grant County, WA | Construction sand and gravel | 2 | 51 |
| Portable Crusher #1 | North Central Construction, Inc. | Grant County, WA | Crushed, broken stone | 10 | 21 |
| Portable Power Screen | Tommer Construction Co Inc | Grant County, WA | Construction sand and gravel | 2 | 18 |
| Arp Portable Wash Plant #1 | Interstate Concrete and Asphalt Company | Grant County, WA | Construction sand and gravel | 2 | 18 |
| Frenchman Hills Quarry Portable Plant #2707 | Segale Properties LLC | Grant County, WA | Construction sand and gravel | 2 | 18 |
| Portable Crusher #2 | North Central Construction, Inc. | Grant County, WA | Construction sand and gravel | 3 | 12 |
| RPC Gravel Pit1 | RPC Gravel LLC | Grant County, WA | Sand, common | 3 | 12 |
| Quincy WA Mine | Imerys Filtration Minerals, Inc. | Grant County, WA | Diatomaceous earth (diatomite) | 10 | 6 |
| Wash Plant | Aaa Ready-Mix Inc | Grant County, WA | Construction sand and gravel | 2 | 4 |
| Hiawatha Wash Plant | Aaa Ready-Mix Inc | Grant County, WA | Construction sand and gravel | 2 | 4 |
| Screen Plant #2 | Central Washington Asphalt | Grant County, WA | Construction sand and gravel | 2 | 1 |
| TTC-1 | Triple Threat Crushing | Grant County, WA | Construction sand and gravel | 3 | 0 |
| Portable Plant | Baseline Crushing Inc. | Grant County, WA | Construction sand and gravel | 2 | 0 |
| Portable 1 | Quincy Rock Products, L.L.C. | Grant County, WA | Crushed, broken stone | 0 | 0 |
| Wash Plant 5 | Aaa Ready-Mix Inc | Grant County, WA | Not stated | 0 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 10 | 58.8% |
| Crushed, broken stone | 3 | 17.6% |
| Misc. nonmetallic mnls. | 1 | 5.9% |
| Diatomaceous earth (diatomite) | 1 | 5.9% |
| Sand, common | 1 | 5.9% |
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 | 3 | $4,073 | 2 |
| 2023 | 31 | 3 | $5,181 | 1 |
| 2024 | 81 | 11 | $20,308 | 2 |
| 2025 | 67 | 14 | $66,226 | 2 |
| 2026 | 50 | 3 | $9,755 | 2 |
Standards cited most at mines in Grant County, Washington
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 | 27 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 24 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 20 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 20 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 17 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 15 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 7 |
| 30 CFR 47.41 | Hazard communication | 6 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12002 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 5 |
Injury and illness cases at mines in Grant County, Washington
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 mines in Grant County, Washington describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 3 |
| Machinery | 2 |
| Stepping or kneeling on object | 2 |
| Other | 2 |
Equipment named in accident reports at mines in Grant County, Washington
| Equipment | Reports |
|---|---|
| Front-end loader | 1 |
| Welding machine | 1 |
| Packaging machine | 1 |
| Bulldozer | 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.