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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 F022B12
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.3 on-site hours reported

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

    violationRecord 5133844
    ROAD FORK #52 MINE · 4609522

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

  3. Installation of electric equipment and conductors; permissibility.

    violationRecord 5092552
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1002(a) · $151.00 proposed penalty

  4. Handtools (nonpowered)

    accidentRecord 220262090011
    ROAD FORK #52 MINE · 4609522

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee got out of their shuttle car to assist the electrician working on a roof bolter that was blocking the roadway. As they were cutting the conduit from a panic switch tree, the knife slipped cutting their left forearm.

  5. Power wires and cables; insulation and protection.

    violationRecord 5133843
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $3,448.00 proposed penalty

  6. Methane monitors.

    violationRecord 5133842
    ROAD FORK #52 MINE · 4609522

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

  7. Accumulation of combustible materials.

    violationRecord 5133841
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $336.00 proposed penalty

  8. Roof control plan.

    violationRecord 5092551
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $697.00 proposed penalty

  9. Electric equipment; examination, testing and maintenance.

    violationRecord 5092550
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $288.00 proposed penalty

  10. Spot Inspections

    inspectionRecord F022B11
    ROAD FORK #52 MINE · 4609522

    103(i) · 2.0 on-site hours reported

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

    violationRecord 5133840
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $2,133.00 proposed penalty

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

    violationRecord 5133839
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $2,133.00 proposed penalty

  13. Roof bolting.

    violationRecord 5092549
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.204(c)(1) · $151.00 proposed penalty

  14. Permissible electric face equipment; maintenance.

    violationRecord 5132563
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $267.00 proposed penalty

  15. Machinery and equipment; operation and maintenance.

    violationRecord 5132562
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $1,431.00 proposed penalty

  16. Permissible electric face equipment; maintenance.

    violationRecord 5132561
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $267.00 proposed penalty

  17. Refuge alternatives.

    violationRecord 5132560
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1506(h) · $1,968.00 proposed penalty

  18. Power wires and cables; insulation and protection.

    violationRecord 5132559
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $3,448.00 proposed penalty

  19. Investigation.

    violationRecord 5096657
    ROAD FORK #52 MINE · 4609522

    30 CFR 50.11(b)(5) · $151.00 proposed penalty

  20. Investigation.

    violationRecord 5096656
    ROAD FORK #52 MINE · 4609522

    30 CFR 50.11(b)(8) · $151.00 proposed penalty

  21. Verbal Hazard Complaint Inspections

    inspectionRecord F025BED
    ROAD FORK #52 MINE · 4609522

    3.5 on-site hours reported

  22. Spot Inspections

    inspectionRecord F036043
    ROAD FORK #52 MINE · 4609522

    103(i) · 5.5 on-site hours reported

  23. Mine ventilation plan; submission and approval.

    violationRecord 5094507
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $2,503.00 proposed penalty

  24. Accumulations of combustible materials.

    violationRecord 5132558
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1104 · $336.00 proposed penalty

  25. Loading and haulage equipment; inspection and maintenance.

    violationRecord 5132557
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1606(c) · $504.00 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.