Mines in Knox County, Ohio
Knox County, Ohio has 11 mines on MSHA's register: 5 active, 6 abandoned. 112 accidents have been reported at these mines between 1983 and 2025. Inspectors have issued 578 citations.
Every mine MSHA has registered in Knox County, working or not, with the accident, fatality and citation record each one carries on this site. Active mines are listed first, then the rest by the weight of their record.
- Mines on register
- 11
- Active
- 5
- Fatalities on record
- 0
- Citations issued
- 578
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County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.Mines plot only where MSHA holds a surveyed coordinate for the site; mines the agency locates to a town, county or state centroid are in the counts and the list above but not drawn. Click a point for the mine's status and record.
| Operator | Mines | Active | Fatalities |
|---|---|---|---|
| Small's Sand & Gravel Inc. | 2 | 1 | 0 |
| United Aggregates Inc. | 2 | 2 | 0 |
| Briar Hill Stone Company | 1 | 0 | 0 |
| IRG Newcastle LLC | 1 | 0 | 0 |
| Killbuck Sand & Gravel Company | 1 | 0 | 0 |
| S & S Aggregate | 1 | 0 | 0 |
| Select Materials | 1 | 1 | 0 |
| Shelly Materials Inc | 1 | 0 | 0 |
| The Olen Corporation | 1 | 1 | 0 |
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Select Materials-Millwood OperationActive 0 fatal 138 citationsSurface metal/non-metal · Select Materials · MSHA ID 3301355
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UNITED AGGREGATES, INC.Active 0 fatal 205 citationsSurface metal/non-metal · United Aggregates Inc · MSHA ID 3301612
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Fredericktown PlantActive 0 fatal 54 citationsSurface metal/non-metal · The Olen Corporation · MSHA ID 3303848
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Small's Sand & Gravel, Inc.Active 0 fatal 79 citationsSurface metal/non-metal · Small's Sand & Gravel Inc · MSHA ID 3303012
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United Aggregates Inc.Active 0 fatal 87 citationsSurface metal/non-metal · United Aggregates Inc. · MSHA ID 3304514
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S & S Aggregate Plant #13Abandoned 0 fatal 0 citationsSurface metal/non-metal · S & S Aggregate · MSHA ID 3301483
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SHELLY MATERIALS INC. MT. VERNONAbandoned 0 fatal 0 citationsSurface metal/non-metal · Shelly Materials Inc · MSHA ID 3301492
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PLANT #2Abandoned 0 fatal 9 citationsSurface metal/non-metal · Small's Sand & Gravel Inc. · MSHA ID 3304371
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IRG Newcastle LLCAbandoned 0 fatal 6 citationsSurface metal/non-metal · IRG Newcastle LLC · MSHA ID 3304494
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Killbuck Sand & Gravel CompanyAbandoned 0 fatal 0 citationsSurface metal/non-metal · Killbuck Sand & Gravel Company · MSHA ID 3301537
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Knox County QuarriesAbandoned 0 fatal 0 citationsSurface metal/non-metal · Briar Hill Stone Company · MSHA ID 3300028
Status, type and operator are as reported to MSHA. Fatality and accident counts are MSHA's reportable accident records for the mine; citations are inspector-issued violations on record. Each mine's own page carries the full detail.
The register is MSHA's Mine Data Retrieval System: every operation ever assigned a mine ID, including ones abandoned decades ago, so the count is a history of mining in the county, not a count of working mines. A mine's county is the one its operator reported to MSHA. Fatality and accident counts start with MSHA's reportable-accident records (1983 onward); citation counts are inspector-issued violations on record. We are an independent research tool, not MSHA.