O-N Minerals Portage Company LLC operator
Controlled by
Carmeuse Holding SA
MSHA operator ID: L17923
Watch this operator
Email me when a new MSHA incident is filed at any O-N Minerals Portage Company LLC mine.
- Fatalities
- 0
- Total incidents
- 12
- Mines on record
- 1
- Years on record
- 2004–2026
Compliance record
MSHA citations since 2001
151
citations
34
significant & substantial
$34,283
proposed penalties
$33,897
paid to date
Source: MSHA violations data, updated weekly.
Top causes
- HANDLING OF MATERIALS 4 non-fatal
- MACHINERY 2 non-fatal
- ELECTRICAL 1 non-fatal
- HANDTOOLS (NONPOWERED) 1 non-fatal
- NONPOWERED HAULAGE 1 non-fatal
- OTHER 1 non-fatal
Incident timeline
2026
1
2024
1
2016
3
2015
1
2014
1
2012
1
2009
1
2005
1
2004
2