Mining Incidents

Portable #4 Metal/Non-Metal

Controlled by Knife River Corporation
Billings, Yellowstone County, MT  ·  Temporarily Idled
MSHA Mine ID: 2402047

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Fatalities
0
Total incidents
1
Years on record
2020
Latest incident
Aug 2020
Compliance record
MSHA citations since 2024
3
citations
0
significant & substantial
$445
proposed penalties
$445
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 0 0 0
2025 Q2 947 1 0 1056.0
2024 Q2 874 2 0 2288.3
2024 Q1 0 0 0
2023 Q4 702 0 0 0.0
2023 Q3 1,686 0 0 0.0
2023 Q1 478 0 0 0.0
2022 Q4 1,283 0 0 0.0
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

1 on file

2020 · 1 incident

August 20, 2020 MT · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker HANDLING OF MATERIALS
Knife River Billings · Struck by falling object

Employee was repairing the decking on a drop deck trailer upon which a generator sits. To access the decking a small transformer needed to be removed. While attempting to remove the transformer it fell striking the employee's left pinky finger lacerating it. Gloves were being worn.