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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. Installation of high-voltage transmission cables.

    violationRecord 5130590
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.807 · $1,320.00 proposed penalty

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

    violationRecord 5130589
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $5,574.00 proposed penalty

  3. Other safeguards.

    violationRecord 5096551
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1403

  4. Machinery and equipment; operation and maintenance.

    violationRecord 5096550
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $4,047.00 proposed penalty

  5. Permissible electric face equipment; maintenance.

    violationRecord 5096549
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $642.00 proposed penalty

  6. Permissible electric face equipment; maintenance.

    violationRecord 5096548
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $642.00 proposed penalty

  7. Roof control plan.

    violationRecord 5096547
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $3,184.00 proposed penalty

  8. Verbal Hazard Complaint Inspections

    inspectionRecord F02243F
    ROAD FORK #52 MINE · 4609522

    9.3 on-site hours reported

  9. Machinery and equipment; operation and maintenance.

    violationRecord 5130588
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(c) · Significant and substantial (S&S) · $2,936.00 proposed penalty

  10. Permissible electric face equipment; maintenance.

    violationRecord 5186249
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $642.00 proposed penalty

  11. Accumulation of combustible materials.

    violationRecord 5186248
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $883.00 proposed penalty

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

    violationRecord 5096303
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.701 · $177.00 proposed penalty

  13. Electric equipment; examination, testing and maintenance.

    violationRecord 5186247
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $2,503.00 proposed penalty

  14. Inspection of fire suppression devices.

    violationRecord 5186246
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-16(b) · $398.00 proposed penalty

  15. Power wires and cables; insulation and protection.

    violationRecord 5130587
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $4,749.00 proposed penalty

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

    violationRecord 5130586
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · $959.00 proposed penalty

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

    violationRecord 5130585
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $5,574.00 proposed penalty

  18. Installation of high-voltage transmission cables.

    violationRecord 5130584
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.807 · $1,320.00 proposed penalty

  19. Spot Inspections

    inspectionRecord F017F48
    ROAD FORK #52 MINE · 4609522

    103(i) · 4.5 on-site hours reported

  20. Other safeguards.

    violationRecord 5096986
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1403 · $1,320.00 proposed penalty

  21. Spot Inspections

    inspectionRecord F017F47
    ROAD FORK #52 MINE · 4609522

    103(i) · 5.5 on-site hours reported

  22. Mine ventilation plan; submission and approval.

    violationRecord 5091176
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $465.00 proposed penalty

  23. Slip or fall of person

    accidentRecord 220260200026
    ROAD FORK #52 MINE · 4609522

    Days away from work only

    Accident narrative

    Icy conditions on deck of crane. Operator was leaving cab and slipped on deck of crane and fell to same level. The operator grabbed the cab door on way down causing minor strain to right shoulder. The operator's hard hat came off, EE's butt hit 1st causing bruising to right humerus, and back of head struck platform resulting in a contusion and hematoma.

  24. Verbal Hazard Complaint Inspections

    inspectionRecord F02243E
    ROAD FORK #52 MINE · 4609522

    36.8 on-site hours reported

  25. Preshift examination at fixed intervals.

    violationRecord 5130583
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(f) · $151.00 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.