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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. Short circuit protection; ratings and settings of circuit breakers.

    violationRecord 5186285
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.601-1 · $336.00 proposed penalty

  2. Permissible electric face equipment; maintenance.

    violationRecord 5186284
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $226.00 proposed penalty

  3. Methane monitors.

    violationRecord 5186283
    ROAD FORK #52 MINE · 4609522

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

  4. Spot Inspections

    inspectionRecord F01153F
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.5 on-site hours reported

  5. Water spray devices; capacity; water supply; minimum requirements.

    violationRecord 5186282
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-7(b) · $151.00 proposed penalty

  6. Methane monitors.

    violationRecord 5186281
    ROAD FORK #52 MINE · 4609522

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

  7. Electric equipment; examination, testing and maintenance.

    violationRecord 5186280
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $193.00 proposed penalty

  8. Accumulation of combustible materials.

    violationRecord 5186279
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $366.00 proposed penalty

  9. Mechanical equipment guards.

    violationRecord 5186278
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1722(a) · Significant and substantial (S&S) · $3,184.00 proposed penalty

  10. Mine ventilation plan; submission and approval.

    violationRecord 5130638
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $4,749.00 proposed penalty

  11. Electric equipment; examination, testing and maintenance.

    violationRecord 5130637
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $697.00 proposed penalty

  12. Clamping of trailing cables to equipment.

    violationRecord 5130636
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.605 · $1,320.00 proposed penalty

  13. Mechanical equipment guards.

    violationRecord 5130635
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1722(a) · $267.00 proposed penalty

  14. Spot Inspections

    inspectionRecord F017F4C
    ROAD FORK #52 MINE · 4609522

    103(i) · 4.0 on-site hours reported

  15. Electric equipment; examination, testing and maintenance.

    violationRecord 5130634
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $1,126.00 proposed penalty

  16. Short circuit protection; ratings and settings of circuit breakers.

    violationRecord 5186277
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.601-1 · $398.00 proposed penalty

  17. Permissible electric face equipment; maintenance.

    violationRecord 5186276
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $288.00 proposed penalty

  18. Protection from falls of roof, face and ribs.

    violationRecord 5130633
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $6,037.00 proposed penalty

  19. Fire suppression devices.

    violationRecord 5130632
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107 · $398.00 proposed penalty

  20. Electrical connections or splices; suitability.

    violationRecord 5130631
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.514 · $1,320.00 proposed penalty

  21. Roof control plan.

    violationRecord 5130630
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $432.00 proposed penalty

  22. Spot Inspections

    inspectionRecord F017F4B
    ROAD FORK #52 MINE · 4609522

    103(i) · 3.5 on-site hours reported

  23. Permissible electric face equipment; maintenance.

    violationRecord 5186275
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $697.00 proposed penalty

  24. Permissible electric face equipment; maintenance.

    violationRecord 5186274
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $642.00 proposed penalty

  25. Water spray devices; capacity; water supply; minimum requirements.

    violationRecord 5186273
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-7(b) · $177.00 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.