Plant 11 Metal/Non-Metal
Mark Rock Products
· Surface
Controlled by
Mark T Thorson
Rainer MN,
Koochiching County,
MN
·
Intermittent
MSHA Mine ID: 2102550
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2022
15
citations
5
significant & substantial
$2,414
proposed penalties
$2,414
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 414 | 3 | 1 | 7246.4 |
| 2025 Q3 | 1,011 | 3 | 0 | 2967.4 |
| 2025 Q2 | 6 | 0 | 0 | 0.0 |
| 2025 Q1 | 0 | 0 | 0 | |
| 2024 Q4 | 782 | 0 | 0 | 0.0 |
| 2024 Q3 | 0 | 0 | 0 | |
| 2024 Q2 | 864 | 2 | 0 | 2314.8 |
| 2024 Q1 | 0 | 0 | 0 |
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.