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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. Automatic emergency-parking brakes.

    violationRecord 5096813
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.523-3(b)(2) · Significant and substantial (S&S) · $18,504.00 proposed penalty

  2. Machinery and equipment; operation and maintenance.

    violationRecord 5096812
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $8,315.00 proposed penalty

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

    violationRecord 5090830
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · $432.00 proposed penalty

  4. Spot Inspections

    inspectionRecord F0107DC
    ROAD FORK #52 MINE · 4609522

    103(i) · 15.8 on-site hours reported

  5. Mobile equipment; automatic warning devices.

    violationRecord 5023986
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.410(c) · $151.00 proposed penalty

  6. Electric equipment; examination, testing and maintenance.

    violationRecord 5096811
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $267.00 proposed penalty

  7. Methane monitors.

    violationRecord 5096810
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $366.00 proposed penalty

  8. Methane monitors.

    violationRecord 5096808
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $366.00 proposed penalty

  9. Methane monitors.

    violationRecord 5090829
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $336.00 proposed penalty

  10. Mine ventilation plan; submission and approval.

    violationRecord 5090828
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $1,219.00 proposed penalty

  11. Mechanical equipment guards.

    violationRecord 5025106
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.400(a) · $151.00 proposed penalty

  12. Insulating mats at power switches.

    violationRecord 5025105
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.513 · $151.00 proposed penalty

  13. Quantity and location of firefighting equipment.

    violationRecord 5025104
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.1109(e)(1) · $151.00 proposed penalty

  14. Electric equipment; examination, testing, and maintenance.

    violationRecord 5023985
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.502 · $151.00 proposed penalty

  15. Machinery and equipment; operation and maintenance.

    violationRecord 5090827
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · $2,503.00 proposed penalty

  16. Mine ventilation plan; submission and approval.

    violationRecord 5090826
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $1,320.00 proposed penalty

  17. Mechanical equipment guards.

    violationRecord 5023984
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.400(a) · $151.00 proposed penalty

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

    violationRecord 5096807
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $10,569.00 proposed penalty

  19. Ventilation controls.

    violationRecord 5096806
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.333(d)(3) · $151.00 proposed penalty

  20. Escapeways; bituminous and lignite mines.

    violationRecord 5090825
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.380(d)(7)(vii) · $151.00 proposed penalty

  21. Ventilation controls.

    violationRecord 5090824
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.333(h) · $151.00 proposed penalty

  22. Verbal Hazard Complaint Inspections

    inspectionRecord F009F4F
    ROAD FORK #52 MINE · 4609522

    5.8 on-site hours reported

  23. Spot Inspections

    inspectionRecord F01D4CA
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.5 on-site hours reported

  24. Ladders; construction; installation and maintenance.

    violationRecord 5025103
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.206(d) · $151.00 proposed penalty

  25. Mechanical equipment guards.

    violationRecord 5025102
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.400(a) · $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.