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O-N Minerals (Michigan) Company operator

Controlled by Carmeuse Holding SA
MSHA operator ID: L17341

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Email me when a new MSHA incident is filed at any O-N Minerals (Michigan) Company mine.

Fatalities
1
Total incidents
366
Mines on record
3
Years on record
2000–2026
Compliance record
MSHA citations since 2000
1,785
citations
257
significant & substantial
$662,414
proposed penalties
$488,163
paid to date
Source: MSHA violations data, updated weekly.

Top causes

Incident timeline

2026
5
2025
11
2024
17
2023
12
2022
10
2021
8
2020
10
2019
6
2018
10 (1f)
2017
12
2016
14
2015
8
2014
10
2013
17
2012
12
2011
7
2010
8
2009
12
2008
4
2007
13
2006
15
2005
24
2004
22
2003
19
2002
17
2001
35
2000
28

Mines on record

Fatalities under this operator

1 recorded
November 3, 2018 MI · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor Fatality · POWERED HAULAGE
O-N Minerals (Michigan) Company · Caught in, under or between a moving and a stationary object

Supervisor pick-up was struck by haul truck, resulting in a fatality.