Knife River Materials operator
Controlled by
MDU Resources Group Inc
MSHA operator ID: 0052886
- Fatalities
- 0
- Total incidents
- 2
- Mines on record
- 2
- Years on record
- 2007–2014
Compliance record
MSHA citations since 2004
85
citations
12
significant & substantial
$10,484
proposed penalties
$9,912
paid to date
95% of proposed penalties paid to date, a $572 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2004
130
inspections on record
1,747
inspection hours
4.9
citations per 100 inspection hours
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.85 citations across 1,747 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$10K
proposed penalties
$10K
current assessed
$10K
paid to date
$151
outstanding
83 assessments are final orders; 10 contested dockets.
As of the most recent assessment on 2026-03-31.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Top causes
- POWERED HAULAGE 1 non-fatal
- SLIP OR FALL OF PERSON 1 non-fatal
Incident timeline
2014
1
2007
1
Mines on record
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The full compliance file on Knife River Materials
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.