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Mammoth Coal 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. Electric equipment and circuits; overload and short circuit protection.

    violationRecord 5029778
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.518 · $504.00 proposed penalty

  2. Spot Inspections

    inspectionRecord F01AAB7
    ROAD FORK #52 MINE · 4609522

    103(i) · 5.5 on-site hours reported

  3. Spot Inspections

    inspectionRecord F011541
    ROAD FORK #52 MINE · 4609522

    103(i) · 0.8 on-site hours reported

  4. Verbal Hazard Complaint Inspections

    inspectionRecord F00D14B
    ROAD FORK #52 MINE · 4609522

    71.3 on-site hours reported

  5. Permanent splicing of trailing cables.

    violationRecord 5097404
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.604(b) · Significant and substantial (S&S) · $3,736.00 proposed penalty

  6. Mine ventilation plan; submission and approval.

    violationRecord 5097403
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $1,037.00 proposed penalty

  7. Mine ventilation plan; submission and approval.

    violationRecord 5097402
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $549.00 proposed penalty

  8. Electric equipment; examination, testing and maintenance.

    violationRecord 5029777
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $883.00 proposed penalty

  9. Permissible electric face equipment; maintenance.

    violationRecord 5029776
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $245.00 proposed penalty

  10. Mine ventilation plan; submission and approval.

    violationRecord 5029775
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $549.00 proposed penalty

  11. Methane monitors.

    violationRecord 5097401
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $313.00 proposed penalty

  12. Preshift examination at fixed intervals.

    violationRecord 5097400
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(g) · $151.00 proposed penalty

  13. Mine ventilation plan; submission and approval.

    violationRecord 5028274
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · Significant and substantial (S&S) · $6,540.00 proposed penalty

  14. Electric equipment; examination, testing and maintenance.

    violationRecord 5186303
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $165.00 proposed penalty

  15. Noise exposure assessment.

    violationRecord 5186302
    ROAD FORK #52 MINE · 4609522

    30 CFR 62.110(e) · $151.00 proposed penalty

  16. Smoking programs.

    violationRecord 5186301
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1702-1 · $151.00 proposed penalty

  17. Sanitary toilet facilities; maintenance.

    violationRecord 5186300
    ROAD FORK #52 MINE · 4609522

    30 CFR 71.501 · $151.00 proposed penalty

  18. Accumulations of combustible materials.

    violationRecord 5186299
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1104 · Significant and substantial (S&S) · $1,679.00 proposed penalty

  19. Loading and haulage equipment; installations.

    violationRecord 5186298
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1605(a) · $336.00 proposed penalty

  20. Loading and haulage equipment; installations.

    violationRecord 5186297
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1605(a) · $336.00 proposed penalty

  21. Loading and haulage equipment; installations.

    violationRecord 5186296
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1605(d) · $151.00 proposed penalty

  22. Permissible electric face equipment; maintenance.

    violationRecord 5095503
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $226.00 proposed penalty

  23. Spot Inspections

    inspectionRecord F011540
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.8 on-site hours reported

  24. Methane monitors.

    violationRecord 5186295
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $336.00 proposed penalty

  25. Impoundment Spot Inspection

    inspectionRecord F02AF33
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    3.3 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.