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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. Mechanical equipment guards.

    violationRecord 5026758
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.400(d) · $151.00 proposed penalty

  2. Travelways at surface installations.

    violationRecord 5026757
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.205(b) · $151.00 proposed penalty

  3. Electric equipment; examination, testing and maintenance.

    violationRecord 5133862
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $288.00 proposed penalty

  4. Accumulation of combustible materials.

    violationRecord 5133861
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $336.00 proposed penalty

  5. Power wires and cables; insulation and protection.

    violationRecord 5133860
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $3,448.00 proposed penalty

  6. Power wires and cables; insulation and protection.

    violationRecord 5133859
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $3,448.00 proposed penalty

  7. Mine ventilation plan; submission and approval.

    violationRecord 5133858
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $504.00 proposed penalty

  8. Condition and examination of firefighting equipment.

    violationRecord 5095568
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1100-3 · $193.00 proposed penalty

  9. Electric equipment; examination, testing and maintenance.

    violationRecord 5095567
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $288.00 proposed penalty

  10. Dust disease of lungs

    accidentRecord 220262150003
    ROAD FORK #52 MINE · 4609522

    Occupatnal illness not deg 1-6

    Accident narrative

    The employee has been diagnosed with Occupational Pneumoconiosis.

  11. Regular Safety and Health Inspection

    inspectionRecord F015C7B
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    150.0 on-site hours reported

  12. Travelways at surface installations.

    violationRecord 5026756
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.205(b) · $151.00 proposed penalty

  13. Dust accumulations in surface installations.

    violationRecord 5026755
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.202 · $151.00 proposed penalty

  14. Air quality detectors and measurement devices.

    violationRecord 5096671
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.320(a) · $4,383.00 proposed penalty

  15. Escapeways; bituminous and lignite mines.

    violationRecord 5096670
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.380(d)(7)(vi) · $1,126.00 proposed penalty

  16. Roof control plan.

    violationRecord 5096669
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $3,448.00 proposed penalty

  17. Condition and examination of firefighting equipment.

    violationRecord 5096668
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1100-3 · $432.00 proposed penalty

  18. Mine ventilation plan; submission and approval.

    violationRecord 5096667
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $755.00 proposed penalty

  19. Temporary notations, revisions, and supplements.

    violationRecord 5096666
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1202 · $209.00 proposed penalty

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

    violationRecord 5133855
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · $288.00 proposed penalty

  21. Methane monitors.

    violationRecord 5133854
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $313.00 proposed penalty

  22. Permanent splicing of trailing cables.

    violationRecord 5133853
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.604(b) · Significant and substantial (S&S) · $3,448.00 proposed penalty

  23. Power wires and cables; insulation and protection.

    violationRecord 5133852
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $3,448.00 proposed penalty

  24. Power wires and cables; insulation and protection.

    violationRecord 5133851
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $3,448.00 proposed penalty

  25. Roof control plan.

    violationRecord 5133850
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $465.00 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.