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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. Permissible electric face equipment; maintenance.

    violationRecord 5096600
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $245.00 proposed penalty

  2. Machinery and equipment; operation and maintenance.

    violationRecord 5096599
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $1,431.00 proposed penalty

  3. Approval of other fire suppression devices.

    violationRecord 5096598
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-13(h) · $336.00 proposed penalty

  4. Roof control plan.

    violationRecord 5096597
    ROAD FORK #52 MINE · 4609522

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

  5. Dust disease of lungs

    accidentRecord 220261110017
    ROAD FORK #52 MINE · 4609522

    Occupatnal illness not deg 1-6

    Accident narrative

    EE has been diagnosed with Occupational Pneumoconiosis.

  6. Spot Inspections

    inspectionRecord F005E7D
    ROAD FORK #52 MINE · 4609522

    103(i) · 8.3 on-site hours reported

  7. Methane monitors.

    violationRecord 5097275
    ROAD FORK #52 MINE · 4609522

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

  8. Condition and examination of firefighting equipment.

    violationRecord 5097274
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1100-3 · $398.00 proposed penalty

  9. Methane monitors.

    violationRecord 5133216
    ROAD FORK #52 MINE · 4609522

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

  10. Spot Inspections

    inspectionRecord F0219CB
    ROAD FORK #52 MINE · 4609522

    103(i) · 7.5 on-site hours reported

  11. Roof control plan.

    violationRecord 5097950
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $755.00 proposed penalty

  12. Permanent splicing of trailing cables.

    violationRecord 5133215
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.604(b) · $755.00 proposed penalty

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

    violationRecord 5133214
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.630(b) · $697.00 proposed penalty

  14. Permissible electric face equipment; maintenance.

    violationRecord 5133213
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $267.00 proposed penalty

  15. Accumulation of combustible materials.

    violationRecord 5133212
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $755.00 proposed penalty

  16. Inspection of fire suppression devices.

    violationRecord 5133211
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-16(b) · $165.00 proposed penalty

  17. Roof control plan.

    violationRecord 5133210
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $755.00 proposed penalty

  18. Inspection of fire suppression devices.

    violationRecord 5096596
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-16(b) · $151.00 proposed penalty

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

    violationRecord 5096595
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $3,448.00 proposed penalty

  20. Storage of liquefied and nonliquefied compressed gas cylinders; requirements.

    violationRecord 5096594
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1106-3(a)(2) · $336.00 proposed penalty

  21. Impoundment Spot Inspection

    inspectionRecord F02AF3A
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    10.5 on-site hours reported

  22. Permissible electric face equipment; maintenance.

    violationRecord 5133209
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $549.00 proposed penalty

  23. Permissible electric face equipment; maintenance.

    violationRecord 5133208
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $592.00 proposed penalty

  24. Electric equipment; examination, testing and maintenance.

    violationRecord 5133207
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $288.00 proposed penalty

  25. Electrical connections or splices; suitability.

    violationRecord 5133206
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.514 · $336.00 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.