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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. Preshift examination at fixed intervals.

    violationRecord 5098486
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(f) · $151.00 proposed penalty

  2. Condition and examination of firefighting equipment.

    violationRecord 5098487
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1100-3 · $226.00 proposed penalty

  3. Mine ventilation plan; submission and approval.

    violationRecord 5094706
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $465.00 proposed penalty

  4. Electric equipment; examination, testing and maintenance.

    violationRecord 5186244
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $755.00 proposed penalty

  5. Power wires and cables; insulation and protection.

    violationRecord 5186243
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $4,749.00 proposed penalty

  6. Other safeguards.

    violationRecord 5130582
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1403 · $398.00 proposed penalty

  7. Electric equipment; examination, testing and maintenance.

    violationRecord 5130581
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $336.00 proposed penalty

  8. Violation — cited standard not reported

    violationRecord 5130580
    ROAD FORK #52 MINE · 4609522

    $443.00 proposed penalty

  9. Clamping of trailing cables to equipment.

    violationRecord 5186242
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.605 · $592.00 proposed penalty

  10. Escapeways; bituminous and lignite mines.

    violationRecord 5186241
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.380(d)(7)(vi) · $1,550.00 proposed penalty

  11. Machinery and equipment; operation and maintenance.

    violationRecord 5130579
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $2,503.00 proposed penalty

  12. Drill dust control at underground areas of underground mines.

    violationRecord 5130578
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · $432.00 proposed penalty

  13. Accumulation of combustible materials.

    violationRecord 5130577
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $959.00 proposed penalty

  14. Spot Inspections

    inspectionRecord F01153B
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.0 on-site hours reported

  15. Methane monitors.

    violationRecord 5186240
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $398.00 proposed penalty

  16. Violation — cited standard not reported

    violationRecord 5130576
    ROAD FORK #52 MINE · 4609522

    $839.00 proposed penalty

  17. Protection of trailing cables.

    violationRecord 5130575
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.606 · $1,320.00 proposed penalty

  18. Regular Safety and Health Inspection

    inspectionRecord F01153A
    ROAD FORK #52 MINE · 4609522

    626.0 on-site hours reported

  19. Spot Inspections

    inspectionRecord F01FF2C
    ROAD FORK #52 MINE · 4609522

    103(i) · 5.5 on-site hours reported

  20. Spot Inspection

    inspectionRecord F020A59
    ROAD FORK #52 MINE · 4609522

    6.0 on-site hours reported

  21. Handling of materials

    accidentRecord 220253650022
    ROAD FORK #52 MINE · 4609522

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee stated they were assisting an electrician to place a rub rail back on the miner, they smashed their left index finger between the rub rail and the frame of the miner causing a laceration, needing two sutures.

  22. Spot Inspections

    inspectionRecord F01FF2B
    ROAD FORK #52 MINE · 4609522

    103(i) · 5.5 on-site hours reported

  23. Methane monitors.

    violationRecord 5095075
    ROAD FORK #52 MINE · 4609522

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

  24. Methane monitors.

    violationRecord 5095074
    ROAD FORK #52 MINE · 4609522

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

  25. Spot Inspections

    inspectionRecord F01D4DE
    ROAD FORK #52 MINE · 4609522

    103(i) · 4.8 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.