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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. Permissible electric face equipment; maintenance.

    violationRecord 5133205
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $549.00 proposed penalty

  2. Electric equipment; examination, testing and maintenance.

    violationRecord 5133204
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $642.00 proposed penalty

  3. Methane monitors.

    violationRecord 5133203
    ROAD FORK #52 MINE · 4609522

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

  4. Condition and examination of firefighting equipment.

    violationRecord 5096593
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1100-3 · $398.00 proposed penalty

  5. Preshift examination at fixed intervals.

    violationRecord 5096592
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(f) · $226.00 proposed penalty

  6. Roof bolting.

    violationRecord 5096591
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.204(c)(1) · $336.00 proposed penalty

  7. Roof control plan.

    violationRecord 5096590
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $3,736.00 proposed penalty

  8. Accumulation of combustible materials.

    violationRecord 5096589
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $697.00 proposed penalty

  9. Self-rescue devices; inspection, testing, maintenance, repair, and recordkeeping.

    violationRecord 5096588
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1714-3(a) · $504.00 proposed penalty

  10. Handtools (nonpowered)

    accidentRecord 220261050014
    ROAD FORK #52 MINE · 4609522

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee was striking a claw hammer with another claw hammer in an attempt to pull a belt pin from a mechanical splice, when a piece of metal broke off and struck their right forearm, resulting in a laceration and four sutures.

  11. Spot Inspections

    inspectionRecord F005E7C
    ROAD FORK #52 MINE · 4609522

    103(i) · 4.5 on-site hours reported

  12. Automatic emergency-parking brakes.

    violationRecord 5133202
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.523-3(c)(2) · $151.00 proposed penalty

  13. Electric equipment; examination, testing and maintenance.

    violationRecord 5133201
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $165.00 proposed penalty

  14. Permissible electric face equipment; maintenance.

    violationRecord 5096587
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $245.00 proposed penalty

  15. Mine ventilation plan; submission and approval.

    violationRecord 5186320
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $366.00 proposed penalty

  16. Roof control plan.

    violationRecord 5186319
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $755.00 proposed penalty

  17. Grounding metallic frames, casings, and other enclosures of electric equipment.

    violationRecord 5133200
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.701 · $336.00 proposed penalty

  18. Electric equipment; examination, testing and maintenance.

    violationRecord 5096586
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · Significant and substantial (S&S) · $9,757.00 proposed penalty

  19. Preshift examination at fixed intervals.

    violationRecord 5096585
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(f) · $209.00 proposed penalty

  20. Air quality detectors and measurement devices.

    violationRecord 5096584
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.320(a) · $504.00 proposed penalty

  21. Roof control plan.

    violationRecord 5096583
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $755.00 proposed penalty

  22. Other safeguards.

    violationRecord 5186318
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1403 · Significant and substantial (S&S) · $1,679.00 proposed penalty

  23. Handtools (nonpowered)

    accidentRecord 220260990039
    ROAD FORK #52 MINE · 4609522

    Days away from work only

    Accident narrative

    Employee was hitting a conveyor chain with a 5lbs. hammer, when a piece of metal broke loose and struck them in the left side of their groin.

  24. Spot Inspections

    inspectionRecord F005E7B
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.0 on-site hours reported

  25. Mine ventilation plan; submission and approval.

    violationRecord 5097272
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $1,219.00 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.