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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. Drill dust control at underground areas of underground mines.

    violationRecord 5130601
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · $883.00 proposed penalty

  2. Accumulation of combustible materials.

    violationRecord 5130600
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $398.00 proposed penalty

  3. Roof control plan.

    violationRecord 5130599
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $3,448.00 proposed penalty

  4. Mine ventilation plan; submission and approval.

    violationRecord 5091177
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $209.00 proposed penalty

  5. Impoundment Spot Inspection

    inspectionRecord F014031
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    2.5 on-site hours reported

  6. Verbal Hazard Complaint Inspections

    inspectionRecord F01153E
    ROAD FORK #52 MINE · 4609522

    20.3 on-site hours reported

  7. Spot Inspections

    inspectionRecord F017F49
    ROAD FORK #52 MINE · 4609522

    103(i) · 4.0 on-site hours reported

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

    violationRecord 5130598
    ROAD FORK #52 MINE · 4609522

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

  9. Spot Inspections

    inspectionRecord F00CDCD
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.5 on-site hours reported

  10. Methane monitors.

    violationRecord 5092517
    ROAD FORK #52 MINE · 4609522

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

  11. Permanent splicing of trailing cables.

    violationRecord 5092516
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.604(b) · Significant and substantial (S&S) · $1,320.00 proposed penalty

  12. Permissible electric face equipment; maintenance.

    violationRecord 5130597
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $288.00 proposed penalty

  13. Mechanical equipment guards.

    violationRecord 5130596
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1722(a) · Significant and substantial (S&S) · $1,320.00 proposed penalty

  14. Rock dusting.

    violationRecord 5130595
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.402 · $432.00 proposed penalty

  15. Spot Inspections

    inspectionRecord F01153D
    ROAD FORK #52 MINE · 4609522

    103(i) · 3.5 on-site hours reported

  16. Methane monitors.

    violationRecord 5186253
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4)(ii) · $151.00 proposed penalty

  17. Methane monitors.

    violationRecord 5186252
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $959.00 proposed penalty

  18. Methane monitors.

    violationRecord 5186251
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $883.00 proposed penalty

  19. Machinery and equipment; operation and maintenance.

    violationRecord 5130594
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $1,219.00 proposed penalty

  20. Verbal Hazard Complaint Inspections

    inspectionRecord F015170
    ROAD FORK #52 MINE · 4609522

    11.0 on-site hours reported

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

    violationRecord 5096546
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · $959.00 proposed penalty

  22. Mine ventilation plan; submission and approval.

    violationRecord 5096545
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $1,431.00 proposed penalty

  23. Electric equipment; examination, testing and maintenance.

    violationRecord 5130593
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $366.00 proposed penalty

  24. Accumulation of combustible materials.

    violationRecord 5130592
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $959.00 proposed penalty

  25. Roof control plan.

    violationRecord 5130591
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $642.00 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.