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. Protection from falls of roof, face and ribs.

    violationRecord 5025500
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S)

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

    violationRecord 5134660
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S)

  3. Power wires and cables; insulation and protection.

    violationRecord 5134659
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S)

  4. Permissible electric face equipment; maintenance.

    violationRecord 5134658
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503

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

    violationRecord 5134657
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · Significant and substantial (S&S)

  6. Accumulation of combustible materials.

    violationRecord 5134656
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400

  7. Roof control plan.

    violationRecord 5134655
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1)

  8. Handtools (nonpowered)

    accidentRecord 220262880013
    ROAD FORK #52 MINE · 4609522

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee states that while using a set of Red CM 1 1/2-ton chain ratchets to remove slack from the #7 belt, by pulling back the take-up dolly, the chain ratchets' chain broke, striking them on the tip of their right thumb causing a laceration and partial avulsion.

  9. Violation — cited standard not reported

    violationRecord 5135055
    ROAD FORK #52 MINE · 4609522

  10. Accumulation of combustible materials.

    violationRecord 5135054
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400

  11. Criteria—MSHA Form 7000-1, Section C.

    violationRecord 5134654
    ROAD FORK #52 MINE · 4609522

    30 CFR 50.20-6

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

    violationRecord 5134653
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a)

  13. Preshift examination at fixed intervals.

    violationRecord 5134652
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(g)

  14. Fall of roof or back

    accidentRecord 220262860027
    ROAD FORK #52 MINE · 4609522

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee stated that while installing roof support in the #4 entry on the #3 Section MMU 005-0, a portion of draw rock fell from the mine roof striking the employee in the back of EE's head and right ear, resulting in a laceration to the ear and 4 sutures in the right ear.

  15. Power wires and cables; insulation and protection.

    violationRecord 5135053
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S)

  16. Power wires and cables; insulation and protection.

    violationRecord 5135052
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S)

  17. Power wires and cables; insulation and protection.

    violationRecord 5135051
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517

  18. Power wires and cables; insulation and protection.

    violationRecord 5134651
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517

  19. Clamping of trailing cables to equipment.

    violationRecord 5134650
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.605

  20. Roof control plan.

    violationRecord 5134649
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1)

  21. Electric equipment; examination, testing and maintenance.

    violationRecord 5134648
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512

  22. Power wires and cables; insulation and protection.

    violationRecord 5094896
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S)

  23. Accumulation of combustible materials.

    violationRecord 5094895
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400

  24. Electric equipment; examination, testing and maintenance.

    violationRecord 5094894
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512

  25. Spot Inspections

    inspectionRecord F02EE11
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.0 on-site hours reported

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.