Rip Rap Metal/Non-Metal
Knife River North Central
· Surface
Controlled by
Knife River Corporation
Sauk Rapids,
Benton County,
MN
·
Intermittent
MSHA Mine ID: 2100519
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2001
21
citations
3
significant & substantial
$2,005
proposed penalties
$2,005
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 | 1,201 | 0 | 0 | 0.0 |
| 2025 Q3 | 817 | 0 | 0 | 0.0 |
| 2025 Q2 | 1,691 | 0 | 0 | 0.0 |
| 2013 Q3 | 195 | 2 | 0 | 10256.4 |
| 2013 Q2 | 11 | 0 | 0 | 0.0 |
| 2013 Q1 | 1 | 0 | 0 | 0.0 |
| 2012 Q4 | 235 | 0 | 0 | 0.0 |
| 2012 Q3 | 842 | 0 | 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.