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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. Spot Inspections

    inspectionRecord F0107D8
    ROAD FORK #52 MINE · 4609522

    103(i) · 8.8 on-site hours reported

  2. Mine ventilation plan; submission and approval.

    violationRecord 5090285
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $697.00 proposed penalty

  3. Machinery and equipment; operation and maintenance.

    violationRecord 5090284
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · $7,676.00 proposed penalty

  4. Mechanical equipment guards.

    violationRecord 5090283
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1722(c) · $267.00 proposed penalty

  5. Permanent splicing of trailing cables.

    violationRecord 5090282
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.604(b) · $883.00 proposed penalty

  6. Ventilation controls.

    violationRecord 9591685
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.333(b)(1) · $313.00 proposed penalty

  7. Violation — cited standard not reported

    violationRecord 9839077
    ROAD FORK #52 MINE · 4609522

    $5,277.00 proposed penalty

  8. Loading and haulage equipment; installations.

    violationRecord 9839076
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1605(a) · $226.00 proposed penalty

  9. Automatic emergency-parking brakes.

    violationRecord 5090279
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.523-3(b)(5) · $151.00 proposed penalty

  10. Impoundment Spot Inspection

    inspectionRecord F01400B
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    3.0 on-site hours reported

  11. Dust disease of lungs

    accidentRecord 220251270005
    ROAD FORK #52 MINE · 4609522

    Occupatnal illness not deg 1-6

    Accident narrative

    Employee was diagnosed with pneumoconiosis.

  12. Spot Inspections

    inspectionRecord F0107D6
    ROAD FORK #52 MINE · 4609522

    103(i) · 8.0 on-site hours reported

  13. Accumulation of combustible materials.

    violationRecord 5090277
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $288.00 proposed penalty

  14. Electric equipment; examination, testing and maintenance.

    violationRecord 5090276
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $432.00 proposed penalty

  15. Mine ventilation plan; submission and approval.

    violationRecord 5090275
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · Significant and substantial (S&S) · $2,936.00 proposed penalty

  16. Methane monitors.

    violationRecord 5090274
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $366.00 proposed penalty

  17. Methane monitors.

    violationRecord 5090273
    ROAD FORK #52 MINE · 4609522

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

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

    violationRecord 5090272
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $4,749.00 proposed penalty

  19. Mine ventilation plan; submission and approval.

    violationRecord 5090271
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $592.00 proposed penalty

  20. Spot Inspections

    inspectionRecord F0107D5
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.5 on-site hours reported

  21. Electric equipment; examination, testing and maintenance.

    violationRecord 5090270
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $288.00 proposed penalty

  22. Methane monitors.

    violationRecord 5090269
    ROAD FORK #52 MINE · 4609522

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

  23. Rock dusting.

    violationRecord 5090268
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.402 · $336.00 proposed penalty

  24. Mine ventilation plan; submission and approval.

    violationRecord 9839063
    ROAD FORK #52 MINE · 4609522

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

  25. Escapeways; bituminous and lignite mines.

    violationRecord 9839062
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.380(d)(1) · $1,968.00 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.