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. Accumulation of combustible materials.

    violationRecord 5186294
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $697.00 proposed penalty

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

    violationRecord 5186293
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $3,184.00 proposed penalty

  3. Self-rescue devices; inspection, testing, maintenance, repair, and recordkeeping.

    violationRecord 5186292
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1714-3(a) · $1,679.00 proposed penalty

  4. Permanent splicing of trailing cables.

    violationRecord 5095502
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.604(b) · $209.00 proposed penalty

  5. Methane monitors.

    violationRecord 5095501
    ROAD FORK #52 MINE · 4609522

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

  6. Dust disease of lungs

    accidentRecord 220260630010
    ROAD FORK #52 MINE · 4609522

    Occupatnal illness not deg 1-6

    Accident narrative

    EE has been diagnosed with Occupational Pneumoconiosis.

  7. Accumulation of combustible materials.

    violationRecord 5186291
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $697.00 proposed penalty

  8. Spot Inspections

    inspectionRecord 7048269
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.5 on-site hours reported

  9. Roof control plan.

    violationRecord 5097259
    ROAD FORK #52 MINE · 4609522

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

  10. Spot Inspections

    inspectionRecord F017F4D
    ROAD FORK #52 MINE · 4609522

    103(i) · 5.0 on-site hours reported

  11. Automatic emergency-parking brakes.

    violationRecord 5186290
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.523-3(c)(2) · $151.00 proposed penalty

  12. Ventilation controls.

    violationRecord 5186289
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.333(d)(3) · $336.00 proposed penalty

  13. Power wires and cables; insulation and protection.

    violationRecord 5130647
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $4,047.00 proposed penalty

  14. Accumulation of combustible materials.

    violationRecord 5130646
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $697.00 proposed penalty

  15. Permissible electric face equipment; maintenance.

    violationRecord 5130645
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $504.00 proposed penalty

  16. Automatic fire sensors and manual actuators; installation; minimum requirements.

    violationRecord 5186288
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-4(a)(1) · $336.00 proposed penalty

  17. Methane monitors.

    violationRecord 5130644
    ROAD FORK #52 MINE · 4609522

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

  18. Roof control plan.

    violationRecord 5130643
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $504.00 proposed penalty

  19. Mine ventilation plan; submission and approval.

    violationRecord 5130642
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · Significant and substantial (S&S) · $6,540.00 proposed penalty

  20. Electric equipment; examination, testing and maintenance.

    violationRecord 5130641
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $592.00 proposed penalty

  21. Fire-resistant hydraulic fluids and fire suppression devices on underground equipment.

    violationRecord 5186287
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-1(a)(3)(ii) · $398.00 proposed penalty

  22. Grounding metallic frames, casings, and other enclosures of electric equipment.

    violationRecord 5186286
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.701 · $177.00 proposed penalty

  23. Methane monitors.

    violationRecord 5130640
    ROAD FORK #52 MINE · 4609522

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

  24. Electric equipment; examination, testing and maintenance.

    violationRecord 5130639
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $313.00 proposed penalty

  25. Diesel equipment inventory.

    violationRecord 5097947
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.520(b) · $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.