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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. Electric equipment; examination, testing and maintenance.

    violationRecord 5090227
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $288.00 proposed penalty

  2. Violation — cited standard not reported

    violationRecord 5090226
    ROAD FORK #52 MINE · 4609522

    $233.00 proposed penalty

  3. 103 (g) Written Notification Hazard Complaint Inspectio

    inspectionRecord F01D4C3
    ROAD FORK #52 MINE · 4609522

    11.0 on-site hours reported

  4. Spot Inspections

    inspectionRecord F02A963
    ROAD FORK #52 MINE · 4609522

    103(i) · 13.3 on-site hours reported

  5. Regular Safety and Health Inspection

    inspectionRecord F0107CF
    ROAD FORK #52 MINE · 4609522

    682.5 on-site hours reported

  6. Power wires and cables; insulation and protection.

    violationRecord 5090225
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · Significant and substantial (S&S) · $4,383.00 proposed penalty

  7. Accumulation of combustible materials.

    violationRecord 5090224
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $288.00 proposed penalty

  8. Machinery and equipment; operation and maintenance.

    violationRecord 5090223
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $1,126.00 proposed penalty

  9. Accumulation of combustible materials.

    violationRecord 5090222
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $642.00 proposed penalty

  10. Roof control plan.

    violationRecord 5090221
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $313.00 proposed penalty

  11. Roof control plan.

    violationRecord 5090220
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $2,312.00 proposed penalty

  12. Mine ventilation plan; submission and approval.

    violationRecord 9838296
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $10,569.00 proposed penalty

  13. Escapeways; bituminous and lignite mines.

    violationRecord 9838295
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.380(b)(1) · $4,749.00 proposed penalty

  14. Condition and examination of firefighting equipment.

    violationRecord 5090805
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1100-3 · $177.00 proposed penalty

  15. Permissible electric face equipment; maintenance.

    violationRecord 5090804
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $226.00 proposed penalty

  16. Mechanical equipment guards.

    violationRecord 5090803
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1722(a) · Significant and substantial (S&S) · $1,126.00 proposed penalty

  17. Spot Inspections

    inspectionRecord F01FF12
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.5 on-site hours reported

  18. Mine ventilation plan; submission and approval.

    violationRecord 9837867
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $818.00 proposed penalty

  19. Methane monitors.

    violationRecord 9837866
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(a)(4) · $226.00 proposed penalty

  20. Permissible electric face equipment; maintenance.

    violationRecord 9839827
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $226.00 proposed penalty

  21. Accumulation of combustible materials.

    violationRecord 9839826
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $313.00 proposed penalty

  22. Spot Inspections

    inspectionRecord F00EB19
    ROAD FORK #52 MINE · 4609522

    103(i) · 3.5 on-site hours reported

  23. Verbal Hazard Complaint Inspections

    inspectionRecord F00EB18
    ROAD FORK #52 MINE · 4609522

    11.5 on-site hours reported

  24. Machinery and equipment; operation and maintenance.

    violationRecord 9839031
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $1,126.00 proposed penalty

  25. Emergency tethers.

    violationRecord 9839030
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1714-6 · $165.00 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.