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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. Refuge alternatives.

    violationRecord 5186317
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1506(g) · $4,383.00 proposed penalty

  2. Mine ventilation plan; submission and approval.

    violationRecord 5186316
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $226.00 proposed penalty

  3. Regular Safety and Health Inspection

    inspectionRecord F01517D
    ROAD FORK #52 MINE · 4609522

    641.0 on-site hours reported

  4. Spot Inspections

    inspectionRecord F02EE05
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.0 on-site hours reported

  5. Maintenance of incombustible content of rock dust.

    violationRecord 5130648
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.403 · $151.00 proposed penalty

  6. Spot Inspections

    inspectionRecord F02EE04
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.5 on-site hours reported

  7. Mine ventilation plan; submission and approval.

    violationRecord 5131399
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $549.00 proposed penalty

  8. Methane monitors.

    violationRecord 5131398
    ROAD FORK #52 MINE · 4609522

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

  9. Roof control plan.

    violationRecord 5131397
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $3,736.00 proposed penalty

  10. Quantity and location of firefighting equipment.

    violationRecord 5131044
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1100-2(f) · $151.00 proposed penalty

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

    violationRecord 5131043
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-1(a)(3)(ii) · $151.00 proposed penalty

  12. Spot Inspections

    inspectionRecord F02EE03
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.5 on-site hours reported

  13. Methane monitors.

    violationRecord 5131396
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · Significant and substantial (S&S) · $3,448.00 proposed penalty

  14. Methane monitors.

    violationRecord 5131395
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $697.00 proposed penalty

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

    violationRecord 5186308
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.701 · $336.00 proposed penalty

  16. Accumulation of combustible materials.

    violationRecord 5186307
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $697.00 proposed penalty

  17. Verbal Hazard Complaint Inspections

    inspectionRecord F011543
    ROAD FORK #52 MINE · 4609522

    11.0 on-site hours reported

  18. Methane monitors.

    violationRecord 5186306
    ROAD FORK #52 MINE · 4609522

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

  19. Mine ventilation plan; submission and approval.

    violationRecord 5186305
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $366.00 proposed penalty

  20. Identification of circuit breakers.

    violationRecord 5095506
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.904 · $504.00 proposed penalty

  21. Maintenance of belt conveyors and belt conveyor entries.

    violationRecord 5186304
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1731(b) · $151.00 proposed penalty

  22. Spot Inspections

    inspectionRecord F005E7A
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.0 on-site hours reported

  23. Electric equipment; examination, testing and maintenance.

    violationRecord 5095505
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $267.00 proposed penalty

  24. Power wires; support.

    violationRecord 5029780
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.516 · $504.00 proposed penalty

  25. Permissible electric face equipment; maintenance.

    violationRecord 5029779
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $818.00 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.