O-N Minerals, Cedarville Operation

Active Surface Stone

Operator: O-N Minerals (Michigan) Company

Controller: Carmeuse Holding SA

Location: Cedarville, MI, Mackinac County, MI

Employees: 87

827
Violations
160
S&S Violations
93
Accidents
$342K
Penalties

Recent Violations

View all 827 →
Date Section S&S Negligence Penalty
12/02/2025 56.14116(a) Non-S&S LowNegligence $0
12/02/2025 56.20003(a) S&S HighNegligence $9,757
06/18/2025 56.14207 Non-S&S LowNegligence $151
06/18/2025 56.14207 Non-S&S LowNegligence $151
06/18/2025 56.14132(a) Non-S&S LowNegligence $151
06/18/2025 56.12020 S&S ModNegligence $1,320
06/18/2025 56.20003(b) Non-S&S LowNegligence $151
06/17/2025 56.14107(a) S&S LowNegligence $336
06/17/2025 47.44(b) Non-S&S LowNegligence $151
06/17/2025 56.14100(a) Non-S&S LowNegligence $151
06/16/2025 56.14100(b) Non-S&S HighNegligence $1,126
06/16/2025 56.11001 S&S LowNegligence $755
06/16/2025 56.14107(a) S&S LowNegligence $336
06/16/2025 56.12004 Non-S&S ModNegligence $151
06/16/2025 56.12004 Non-S&S ModNegligence $151
06/16/2025 56.12008 Non-S&S ModNegligence $151
01/29/2025 56.4201(a)(3) Non-S&S ModNegligence $151
01/28/2025 56.4201(a)(2) Non-S&S ModNegligence $151
01/28/2025 56.4601 Non-S&S ModNegligence $151
01/28/2025 56.12032 Non-S&S ModNegligence $151

Accidents & Injuries

View all 93 →
Date Classification Injury Days Lost
02/19/2026 SLIP OR FALL OF PERSON DAYS AWAY FROM WORK ONLY None
08/15/2025 HANDLING OF MATERIALS DYS AWY FRM WRK & RESTRCTD ACT 21d lost, 30d restricted
02/18/2025 HANDLING OF MATERIALS DAYS AWAY FROM WORK ONLY 6d lost
09/26/2024 HANDLING OF MATERIALS DAYS RESTRICTED ACTIVITY ONLY 9d restricted
07/01/2024 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
08/12/2023 SLIP OR FALL OF PERSON DYS AWY FRM WRK & RESTRCTD ACT 11d lost, 19d restricted
07/25/2023 STEPPING OR KNEELING ON OBJECT DYS AWY FRM WRK & RESTRCTD ACT 139d lost, 12d restricted
06/28/2023 POWERED HAULAGE DAYS AWAY FROM WORK ONLY 249d lost
01/18/2023 SLIP OR FALL OF PERSON NO DYS AWY FRM WRK,NO RSTR ACT None
08/04/2020 HANDLING OF MATERIALS DAYS RESTRICTED ACTIVITY ONLY 2d restricted

Inspections

View all 125 →
Begin End Hours Inspectors
03/03/2026 0.00 0
12/01/2025 12/04/2025 37.00 1
06/16/2025 06/19/2025 90.50 2
01/27/2025 01/30/2025 36.75 1
01/14/2025 01/14/2025 21.00 1
11/04/2024 11/05/2024 17.00 1
09/17/2024 09/18/2024 16.00 1
05/22/2024 05/22/2024 2.25 1
05/20/2024 05/21/2024 23.75 1
05/14/2024 05/31/2024 26.50 1

Mine Details

MSHA Mine ID2000061
Mine TypeSurface
StatusActive
CommodityStone
SIC DescriptionCrushed, Broken Limestone NEC
Employees87
Days/Week7.0
Hours/Shift8.0
Coordinates46.0488890, -84.3130560
Nearest TownCedarville, MI

Frequently Asked Questions

How many MSHA violations does O-N Minerals, Cedarville Operation have?

O-N Minerals, Cedarville Operation has 827 MSHA violations on record, of which 160 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $342K.

What type of mine is O-N Minerals, Cedarville Operation?

O-N Minerals, Cedarville Operation is a Surface mine producing Stone, located in Cedarville, MI, Mackinac County, MI. It currently has 87 employees.

Has anyone been injured or killed at O-N Minerals, Cedarville Operation?

According to MSHA records, O-N Minerals, Cedarville Operation has 93 reported accident/injury records and 1 fatalities on file.

Who operates O-N Minerals, Cedarville Operation?

O-N Minerals, Cedarville Operation is operated by O-N Minerals (Michigan) Company and controlled by Carmeuse Holding SA. MSHA Mine ID: 2000061.