Key Takeaway
Winchester Plant is a active surface mine producing Stone, located in Clear Brook, Frederick County, VA. It has 370 violations on record (90 S&S) and $249K in proposed penalties. Operated by O-N Minerals (Chemstone Company).
Winchester Plant
Operator: O-N Minerals (Chemstone Company)
Controller: Carmeuse Holding SA
Location: Clear Brook, Frederick County, VA
Employees: 97
Recent Violations
View all 370 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 05/29/2025 | 56.14100(b) | Non-S&S | ModNegligence | $151 |
| 01/07/2025 | 56.4501 | Non-S&S | LowNegligence | $151 |
| 06/10/2024 | 56.11001 | S&S | ModNegligence | $328 |
| 06/05/2024 | 56.14107 | Non-S&S | ModNegligence | $147 |
| 11/08/2023 | 56.14100(b) | Non-S&S | ModNegligence | $143 |
| 05/23/2023 | 56.14107(a) | S&S | ModNegligence | $318 |
| 11/30/2022 | 56.19022 | Non-S&S | ModNegligence | $133 |
| 07/06/2022 | 56.14100(b) | Non-S&S | ModNegligence | $133 |
| 06/15/2022 | 56.14100(b) | Non-S&S | ModNegligence | $133 |
| 06/15/2022 | 56.20003(a) | Non-S&S | ModNegligence | $133 |
| 06/15/2022 | 56.20003(a) | Non-S&S | ModNegligence | $133 |
| 02/09/2022 | 56.12006 | Non-S&S | ModNegligence | $133 |
| 02/01/2022 | 56.4201 | Non-S&S | ModNegligence | $133 |
| 02/01/2022 | 56.14101(a)(2) | Non-S&S | ModNegligence | $133 |
| 02/01/2022 | 56.4200(b)(2) | Non-S&S | ModNegligence | $133 |
| 09/01/2021 | 56.20003(a) | Non-S&S | ModNegligence | $125 |
| 09/01/2021 | 56.20003(a) | Non-S&S | ModNegligence | $125 |
| 08/31/2021 | 56.14100(b) | S&S | ModNegligence | $622 |
| 08/31/2021 | 56.7002 | Non-S&S | ModNegligence | $125 |
| 03/10/2021 | 56.12008 | Non-S&S | LowNegligence | $125 |
Accidents & Injuries
View all 58 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 05/28/2024 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 02/19/2024 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 2d lost, 3d restricted |
| 08/18/2022 | OTHER | DAYS RESTRICTED ACTIVITY ONLY | 4d restricted |
| 03/31/2022 | STEPPING OR KNEELING ON OBJECT | DAYS AWAY FROM WORK ONLY | 81d lost |
| 11/23/2021 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 06/07/2021 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 25d restricted |
| 02/23/2021 | HANDTOOLS (NONPOWERED) | DAYS AWAY FROM WORK ONLY | 402d lost |
| 08/20/2020 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 4d restricted |
| 06/19/2020 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 60d restricted |
| 05/07/2020 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
Inspections
View all 81 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 05/28/2025 | 06/11/2025 | 116.00 | 2 |
| 01/05/2025 | 01/27/2025 | 66.00 | 1 |
| 06/03/2024 | 06/17/2024 | 93.50 | 1 |
| 10/30/2023 | 12/01/2023 | 151.00 | 1 |
| 08/01/2023 | 08/03/2023 | 5.00 | 1 |
| 05/22/2023 | 05/26/2023 | 109.50 | 2 |
| 11/28/2022 | 12/06/2022 | 111.50 | 2 |
| 06/14/2022 | 08/30/2022 | 223.50 | 1 |
| 11/17/2021 | 02/10/2022 | 77.50 | 2 |
| 08/30/2021 | 09/21/2021 | 100.25 | 4 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Winchester Plant have?
Winchester Plant has 370 MSHA violations on record, of which 90 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $249K.
What type of mine is Winchester Plant?
Winchester Plant is a Surface mine producing Stone, located in Clear Brook, Frederick County, VA. It currently has 97 employees.
Has anyone been injured or killed at Winchester Plant?
According to MSHA records, Winchester Plant has 58 reported accident/injury records and 0 fatalities on file.
Who operates Winchester Plant?
Winchester Plant is operated by O-N Minerals (Chemstone Company) and controlled by Carmeuse Holding SA. MSHA Mine ID: 4400044.