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Thunder Basin Coal Company LLC 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. Inspection and cover plates.

    violationRecord 5034196
    Black Thunder · 4800977

    30 CFR 77.512 · $177.00 proposed penalty

  2. Electric equipment; frequency of examination and testing.

    violationRecord 9733033
    Black Thunder · 4800977

    30 CFR 77.502-2 · $245.00 proposed penalty

  3. Testing, examination, and maintenance of circuit breakers; procedures.

    violationRecord 9733032
    Black Thunder · 4800977

    30 CFR 77.800-1(a) · $245.00 proposed penalty

  4. Regular Safety and Health Inspection

    inspectionRecord F0065E2
    Black Thunder · 4800977

    238.0 on-site hours reported

  5. Transformers; installation and guarding.

    violationRecord 9733031
    Black Thunder · 4800977

    30 CFR 77.509(c) · $1,037.00 proposed penalty

  6. Electric equipment; examination, testing, and maintenance.

    violationRecord 5034195
    Black Thunder · 4800977

    30 CFR 77.502 · $288.00 proposed penalty

  7. Inspection and cover plates.

    violationRecord 5034194
    Black Thunder · 4800977

    30 CFR 77.512 · Significant and substantial (S&S) · $1,679.00 proposed penalty

  8. Electric equipment; frequency of examination and testing.

    violationRecord 5034193
    Black Thunder · 4800977

    30 CFR 77.502-2 · $151.00 proposed penalty

  9. Daily inspection of surface coal mine; certified person; reports of inspection.

    violationRecord 5034192
    Black Thunder · 4800977

    30 CFR 77.1713(d)(1) · $193.00 proposed penalty

  10. Loading and haulage equipment; inspection and maintenance.

    violationRecord 5033540
    Black Thunder · 4800977

    30 CFR 77.1606(a) · $151.00 proposed penalty

  11. Warning signs; smoking and open flame.

    violationRecord 5033539
    Black Thunder · 4800977

    30 CFR 77.1102 · $151.00 proposed penalty

  12. Dust accumulations in surface installations.

    violationRecord 5033774
    Coal Creek Mine · 4801215

    30 CFR 77.202 · Significant and substantial (S&S) · $9,757.00 proposed penalty

  13. Mechanical equipment guards.

    violationRecord 5033773
    Coal Creek Mine · 4801215

    30 CFR 77.400(d) · $267.00 proposed penalty

  14. Mechanical equipment guards.

    violationRecord 5033772
    Coal Creek Mine · 4801215

    30 CFR 77.400(d) · $267.00 proposed penalty

  15. Illumination.

    violationRecord 5033771
    Coal Creek Mine · 4801215

    30 CFR 77.207 · $151.00 proposed penalty

  16. Dust accumulations in surface installations.

    violationRecord 5033770
    Coal Creek Mine · 4801215

    30 CFR 77.202 · Significant and substantial (S&S) · $9,757.00 proposed penalty

  17. Dust accumulations in surface installations.

    violationRecord 5033769
    Coal Creek Mine · 4801215

    30 CFR 77.202 · Significant and substantial (S&S) · $2,936.00 proposed penalty

  18. Mechanical equipment guards.

    violationRecord 5033768
    Coal Creek Mine · 4801215

    30 CFR 77.400(a) · Significant and substantial (S&S) · $1,320.00 proposed penalty

  19. Powered haulage

    accidentRecord 220261180026
    Black Thunder · 4800977

    Perm tot or perm prtl disablty

    Accident narrative

    A millwright was moving parts with a knuckle boom when the controller was bumped resulting in an injury to the finger that required stitches.

  20. Slip or fall of person

    accidentRecord 220261870012
    Black Thunder · 4800977

    Days away from work only

    Accident narrative

    Team member lost balance and fell with arm in an outstretched position

  21. Examination and maintenance of firefighting equipment.

    violationRecord 5033760
    Coal Creek Mine · 4801215

    30 CFR 77.1110 · $226.00 proposed penalty

  22. Examination and maintenance of firefighting equipment.

    violationRecord 5033759
    Coal Creek Mine · 4801215

    30 CFR 77.1110 · $151.00 proposed penalty

  23. Regular Safety and Health Inspection

    inspectionRecord F010EE0
    Coal Creek Mine · 4801215

    62.5 on-site hours reported

  24. Mobile equipment; automatic warning devices.

    violationRecord 5033758
    Coal Creek Mine · 4801215

    30 CFR 77.410(b) · $226.00 proposed penalty

  25. Verbal Hazard Complaint Inspections

    inspectionRecord F0065DC
    Black Thunder · 4800977

    2.3 on-site hours reported

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.