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

Active Surface Stone

Operator: O-N Minerals (Chemstone Company)

Controller: Carmeuse Holding SA

Location: Clear Brook, Frederick County, VA

Employees: 97

370
Violations
90
S&S Violations
58
Accidents
$249K
Penalties

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

MSHA Mine ID4400044
Mine TypeSurface
StatusActive
CommodityStone
SIC DescriptionLime
Employees97
Days/Week7.0
Hours/Shift8.0
Coordinates39.2527780, -78.0891670
Nearest TownClear Brook

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.