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Knife River Corporation Mountain West safety activity

MSHA violations, accident reports and inspections across the current mine portfolio.

2025-01-01 – 2026-10-31Database snapshot · 2026-10-31

Safety activity

  1. Compliance Follow-up Inspection

    inspectionRecord F043121
    Crusher #2 · 1002088

    10.5 on-site hours reported

  2. Exposure limits for airborne contaminants.

    violationRecord 5210846
    Crusher #2 · 1002088

    30 CFR 56.5001(a)/56.5005 · Significant and substantial (S&S) · $313.00 proposed penalty

  3. Machinery

    accidentRecord 220262160002
    Crusher #1 · 1002089

    No dys awy frm wrk,no rstr act

    Accident narrative

    An employee was tightening countersink allen bolts on a rock shelf for an impactor. TM was holding an allen wrench on the bolt head while another TM put an impact gun on the backside nut. Force of impact gun on the nut threw the allen wrench from TM's hand toward EE's mouth and fractured a tooth.

  4. Regular Safety and Health Inspection

    inspectionRecord F02D451
    Crusher #2 · 1002088

    15.5 on-site hours reported

  5. Horns and backup alarms.

    violationRecord 5210839
    Crusher #2 · 1002088

    30 CFR 56.14132(a) · $151.00 proposed penalty

  6. Inspection.

    violationRecord 5210837
    Crusher #2 · 1002088

    30 CFR 56.4201(a)(2) · $151.00 proposed penalty

  7. Slip or fall of person

    accidentRecord 220262090004
    Crusher #1 · 1002089

    Days restricted activity only

    Accident narrative

    EE was stepping back after hooking up rigging and stepped into a low spot which caught EE's foot as EE fell. EE applied ice and rested it for 6 days with little improvement so got x rays on 7/27 which showed a broken bone in EE's ankle. EE is cleared for light duty work at this time.

  8. Regular Safety and Health Inspection

    inspectionRecord F032F6E
    Crusher #1 · 1002089

    3.0 on-site hours reported

  9. Regular Safety and Health Inspection

    inspectionRecord F02932F
    Wash Plant · 1002170

    11.0 on-site hours reported

  10. Regular Safety and Health Inspection

    inspectionRecord F03B2BC
    Crusher #2 · 1002088

    4.0 on-site hours reported

  11. Regular Safety and Health Inspection

    inspectionRecord F02EB7C
    Crusher #1 · 1002089

    24.0 on-site hours reported

  12. Regular Safety and Health Inspection

    inspectionRecord F01A66D
    Crusher #2 · 1002088

    2.3 on-site hours reported

  13. Inspection.

    violationRecord 9680543
    Crusher #2 · 1002088

    30 CFR 56.4201(a)(2) · $151.00 proposed penalty

  14. Regular Safety and Health Inspection

    inspectionRecord F01A66B
    Wash Plant · 1002170

    2.3 on-site hours reported

  15. Inspection and cover plates.

    violationRecord 9680541
    Wash Plant · 1002170

    30 CFR 56.12032 · $151.00 proposed penalty

  16. Regular Safety and Health Inspection

    inspectionRecord F01A668
    Crusher #1 · 1002089

    3.8 on-site hours reported

  17. Compliance Follow-up Inspection

    inspectionRecord F01A648
    Crusher #1 · 1002089

    0.5 on-site hours reported

  18. Spot Inspection

    inspectionRecord F01A645
    Crusher #1 · 1002089

    3.0 on-site hours reported

  19. Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.

    violationRecord 9990562
    Crusher #1 · 1002089

    30 CFR 50.20(a) · $151.00 proposed penalty

  20. Examination of working places.

    violationRecord 9990561
    Crusher #1 · 1002089

    30 CFR 56.18002(a) · Significant and substantial (S&S) · $1,818.00 proposed penalty

  21. Moving machine parts.

    violationRecord 9990560
    Crusher #1 · 1002089

    30 CFR 56.14107(a) · $151.00 proposed penalty

  22. Safety defects; examination, correction and records.

    violationRecord 9990559
    Crusher #1 · 1002089

    30 CFR 56.14100(b) · $151.00 proposed penalty

  23. Operators stations.

    violationRecord 9990558
    Crusher #1 · 1002089

    30 CFR 56.14103(b) · $151.00 proposed penalty

  24. Inspection.

    violationRecord 9990557
    Crusher #1 · 1002089

    30 CFR 56.4201(a)(2) · $151.00 proposed penalty

  25. Inspection.

    violationRecord 9990556
    Crusher #1 · 1002089

    30 CFR 56.4201(a)(2) · $151.00 proposed penalty

Sources and definitions

MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).

Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.

Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.

Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.

Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.

S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.

Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.

Portfolio totals use current mine membership, including events before the current owner or operator's tenure.