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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. Permissible electric face equipment; maintenance.

    violationRecord 5021070
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $642.00 proposed penalty

  2. Accumulation of combustible materials.

    violationRecord 5021069
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $1,219.00 proposed penalty

  3. Methane monitors.

    violationRecord 5091159
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $1,320.00 proposed penalty

  4. Clamping of trailing cables to equipment.

    violationRecord 5091158
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.605 · $177.00 proposed penalty

  5. Permissible electric face equipment; maintenance.

    violationRecord 5091157
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $313.00 proposed penalty

  6. Dry chemical devices; capacity; minimum requirements.

    violationRecord 5091156
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-9(a)(1) · $177.00 proposed penalty

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

    violationRecord 5025428
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1106-3(a)(2) · $267.00 proposed penalty

  8. Handling of materials

    accidentRecord 220253170242
    ROAD FORK #52 MINE · 4609522

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee stated EE was moving a bucket of plaster, when EE set the bucket down, the plaster splashed into both eyes. Prescription medication was used to treat both eyes.

  9. Verbal Hazard Complaint Inspections

    inspectionRecord 6322091
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    13.3 on-site hours reported

  10. 103 (g) Written Notification Hazard Complaint Inspectio

    inspectionRecord F01D4D7
    ROAD FORK #52 MINE · 4609522

    3.5 on-site hours reported

  11. Spot Inspections

    inspectionRecord F017F38
    ROAD FORK #52 MINE · 4609522

    103(i) · 9.5 on-site hours reported

  12. Methane monitors.

    violationRecord 5092626
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $432.00 proposed penalty

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

    violationRecord 5092625
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $3,736.00 proposed penalty

  14. Roof control plan.

    violationRecord 5092624
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $883.00 proposed penalty

  15. Other safeguards.

    violationRecord 5098255
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1403

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

    violationRecord 5092623
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $3,736.00 proposed penalty

  17. Hazardous conditions and violations of mandatory health or safety standards; posting, correcting, and recording.

    violationRecord 5092622
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.363(a) · $6,540.00 proposed penalty

  18. Accumulation of combustible materials.

    violationRecord 5092621
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $2,712.00 proposed penalty

  19. Roof control plan.

    violationRecord 5092620
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $883.00 proposed penalty

  20. Accumulation of combustible materials.

    violationRecord 5098254
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $1,219.00 proposed penalty

  21. Preshift examination at fixed intervals.

    violationRecord 5098253
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(f) · $151.00 proposed penalty

  22. Roof control plan.

    violationRecord 5092619
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $883.00 proposed penalty

  23. Mine ventilation plan; submission and approval.

    violationRecord 5092618
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $1,126.00 proposed penalty

  24. Accumulation of combustible materials.

    violationRecord 5092617
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $366.00 proposed penalty

  25. Ventilation controls.

    violationRecord 5091153
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.333(c)(3) · $177.00 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.