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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. Accumulation of combustible materials.

    violationRecord 9836884
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $313.00 proposed penalty

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

    violationRecord 9836883
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $1,968.00 proposed penalty

  3. Spot Inspections

    inspectionRecord F001978
    ROAD FORK #52 MINE · 4609522

    103(i) · 4.0 on-site hours reported

  4. Power wires and cables; insulation and protection.

    violationRecord 9836882
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · $883.00 proposed penalty

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

    violationRecord 9836881
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $2,936.00 proposed penalty

  6. Spot Inspections

    inspectionRecord 7048153
    ROAD FORK #52 MINE · 4609522

    103(i) · 4.5 on-site hours reported

  7. Power wires and cables; insulation and protection.

    violationRecord 9836880
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $4,383.00 proposed penalty

  8. Spot Inspections

    inspectionRecord F01D4AF
    ROAD FORK #52 MINE · 4609522

    103(i) · 8.0 on-site hours reported

  9. Actions for excessive methane.

    violationRecord 9838214
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.323(a) · $165.00 proposed penalty

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

    violationRecord 9838213
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · $818.00 proposed penalty

  11. Mine ventilation plan; submission and approval.

    violationRecord 9836879
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $504.00 proposed penalty

  12. Accumulation of combustible materials.

    violationRecord 9836878
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $697.00 proposed penalty

  13. Ventilation controls.

    violationRecord 9836877
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.333(c)(3) · $336.00 proposed penalty

  14. Installation of electric equipment and conductors; permissibility.

    violationRecord 9591649
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1002(a) · $336.00 proposed penalty

  15. Installation of electric equipment and conductors; permissibility.

    violationRecord 9591648
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1002(a) · $336.00 proposed penalty

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

    violationRecord 9591647
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.701 · $336.00 proposed penalty

  17. Escapeways; bituminous and lignite mines.

    violationRecord 9591646
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.380(d)(7)(vii) · $1,968.00 proposed penalty

  18. Verbal Hazard Complaint Inspections

    inspectionRecord F001975
    ROAD FORK #52 MINE · 4609522

    24.8 on-site hours reported

  19. Accumulation of combustible materials.

    violationRecord 9837826
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $366.00 proposed penalty

  20. Mine ventilation plan; submission and approval.

    violationRecord 9837825
    ROAD FORK #52 MINE · 4609522

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

  21. Mine ventilation plan; submission and approval.

    violationRecord 9837824
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $432.00 proposed penalty

  22. Rock dusting.

    violationRecord 9836875
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.402 · $267.00 proposed penalty

  23. Travelways at surface installations.

    violationRecord 9591645
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.205(d) · $151.00 proposed penalty

  24. Roof control plan.

    violationRecord 9837827
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $398.00 proposed penalty

  25. Roof control plan.

    violationRecord 9836876
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $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.