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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. Emergency tethers.

    violationRecord 9839029
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1714-6 · $432.00 proposed penalty

  2. Verbal Hazard Complaint Inspections

    inspectionRecord F01D4BB
    ROAD FORK #52 MINE · 4609522

    3.0 on-site hours reported

  3. Cable fittings; suitability.

    violationRecord 9839028
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.515 · $151.00 proposed penalty

  4. Roof control plan.

    violationRecord 9839731
    ROAD FORK #52 MINE · 4609522

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

  5. Automatic emergency-parking brakes.

    violationRecord 9839027
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.523-3(c)(2) · $336.00 proposed penalty

  6. Spot Inspections

    inspectionRecord 7048923
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.5 on-site hours reported

  7. Mine ventilation plan; submission and approval.

    violationRecord 9839824
    ROAD FORK #52 MINE · 4609522

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

  8. Accumulation of combustible materials.

    violationRecord 9839823
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $288.00 proposed penalty

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

    violationRecord 9839931
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · Significant and substantial (S&S) · $1,818.00 proposed penalty

  10. Permanent splicing of trailing cables.

    violationRecord 9839820
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.604(b) · Significant and substantial (S&S) · $3,184.00 proposed penalty

  11. Roof control plan.

    violationRecord 9839819
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $2,312.00 proposed penalty

  12. Escapeways; bituminous and lignite mines.

    violationRecord 9837865
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.380(d)(7)(vii) · $592.00 proposed penalty

  13. Mine ventilation plan; submission and approval.

    violationRecord 9834066
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $2,503.00 proposed penalty

  14. Mine ventilation plan; submission and approval.

    violationRecord 9834065
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $2,503.00 proposed penalty

  15. Loading and haulage equipment; installations.

    violationRecord 9834064
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1605(c) · Significant and substantial (S&S) · $755.00 proposed penalty

  16. Preshift examination at fixed intervals.

    violationRecord 5090204
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(a)(1) · $1,126.00 proposed penalty

  17. Roof control plan.

    violationRecord 5090203
    ROAD FORK #52 MINE · 4609522

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

  18. Automatic fire sensors.

    violationRecord 5090202
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1103-1(b) · $151.00 proposed penalty

  19. Methane monitors.

    violationRecord 9834063
    ROAD FORK #52 MINE · 4609522

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

  20. Methane monitors.

    violationRecord 9834062
    ROAD FORK #52 MINE · 4609522

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

  21. Mine ventilation plan; submission and approval.

    violationRecord 9834061
    ROAD FORK #52 MINE · 4609522

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

  22. Mine ventilation plan; submission and approval.

    violationRecord 9834060
    ROAD FORK #52 MINE · 4609522

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

  23. Mine ventilation plan; submission and approval.

    violationRecord 9834059
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · Significant and substantial (S&S) · $3,184.00 proposed penalty

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

    violationRecord 9833957
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · $336.00 proposed penalty

  25. Power wires and cables; insulation and protection.

    violationRecord 9833956
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.517 · $245.00 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.