Search

← Mammoth Coal

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. Mine ventilation plan; submission and approval.

    violationRecord 5091611
    ROAD FORK #52 MINE · 4609522

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

  2. Roof control plan.

    violationRecord 5091610
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $755.00 proposed penalty

  3. Transportation of liquefied and nonliquefied compressed gas cylinders; requirements.

    violationRecord 5090943
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1106-2(a)(1) · $165.00 proposed penalty

  4. Accumulation of combustible materials.

    violationRecord 5090942
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $2,503.00 proposed penalty

  5. Roof control plan.

    violationRecord 5090941
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $336.00 proposed penalty

  6. Handling of materials

    accidentRecord 220251550001
    ROAD FORK #52 MINE · 4609522

    Days away from work only

    Accident narrative

    Employee was attempting to flip 60" belt over by hand, when EE felt a pain in EE's right arm.

  7. Powered haulage

    accidentRecord 220251630007
    ROAD FORK #52 MINE · 4609522

    Days away from work only

    Accident narrative

    While lapping belt EE hooked up a pallet puller to a 15' piece of 60" belt, when the scoop operator began to pull, the belt flipped up knocking EE to the ground, landing on left shoulder. "Employee continued working until 06/09/2025".

  8. Other safeguards.

    violationRecord 9834072
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1403

  9. Preshift examination at fixed intervals.

    violationRecord 9834071
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(b) · $6,540.00 proposed penalty

  10. Other safeguards.

    violationRecord 9834070
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1403

  11. Actions for excessive methane.

    violationRecord 9833970
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.323(a) · $336.00 proposed penalty

  12. Protection of trailing cables.

    violationRecord 5090821
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.606 · $504.00 proposed penalty

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

    violationRecord 5090820
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · $288.00 proposed penalty

  14. Dust disease of lungs

    accidentRecord 220251530009
    ROAD FORK #52 MINE · 4609522

    Occupatnal illness not deg 1-6

    Accident narrative

    Employee was diagnosed with pneumoconiosis.

  15. Spot Inspections

    inspectionRecord F0107DB
    ROAD FORK #52 MINE · 4609522

    103(i) · 8.5 on-site hours reported

  16. Loading and haulage equipment; installations.

    violationRecord 5023982
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.1605(k) · $151.00 proposed penalty

  17. Quantity and location of firefighting equipment.

    violationRecord 5096805
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1100-2(f) · $151.00 proposed penalty

  18. Roof control plan.

    violationRecord 5096804
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $1,679.00 proposed penalty

  19. Rock dusting.

    violationRecord 5096803
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.402 · $336.00 proposed penalty

  20. Storage of liquefied and nonliquefied compressed gas cylinders; requirements.

    violationRecord 5096802
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1106-3(a)(2) · $151.00 proposed penalty

  21. Roof control plan.

    violationRecord 5096801
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $5,574.00 proposed penalty

  22. Fall of roof or back

    accidentRecord 220251410016
    ROAD FORK #52 MINE · 4609522

    No dys awy frm wrk,no rstr act

    Accident narrative

    EE stated while riding the MAC-8 to the section, from the end of the track, a piece of draw rock fell striking them on top of the left hand resulting in a laceration.

  23. Regular Safety and Health Inspection

    inspectionRecord F014246
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    142.0 on-site hours reported

  24. Escapeway maps.

    violationRecord 9839090
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1505(b) · $336.00 proposed penalty

  25. Mine ventilation plan; submission and approval.

    violationRecord 9839089
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $592.00 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.