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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. Methane monitors.

    violationRecord 5134608
    ROAD FORK #52 MINE · 4609522

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

  2. Criteria—Haulage; general.

    violationRecord 5134607
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1403-10(e) · $226.00 proposed penalty

  3. Loading and haulage equipment; operation.

    violationRecord 5026766
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.1607(bb) · $151.00 proposed penalty

  4. Water sprinkler systems; fire warning devices at belt drives.

    violationRecord 5134606
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1101-10 · $151.00 proposed penalty

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

    violationRecord 5134605
    ROAD FORK #52 MINE · 4609522

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

  6. Permissible electric face equipment; maintenance.

    violationRecord 5134604
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $267.00 proposed penalty

  7. Permissible electric face equipment; maintenance.

    violationRecord 5134603
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $592.00 proposed penalty

  8. Spot Inspections

    inspectionRecord F036048
    ROAD FORK #52 MINE · 4609522

    103(i) · 4.0 on-site hours reported

  9. Travelways at surface installations.

    violationRecord 5026765
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.205(b) · $151.00 proposed penalty

  10. Openings in surface installations; safeguards.

    violationRecord 5026764
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.204 · $151.00 proposed penalty

  11. Ventilation controls.

    violationRecord 5134602
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.333(c) · $336.00 proposed penalty

  12. Accumulation of combustible materials.

    violationRecord 5134601
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · $755.00 proposed penalty

  13. Disorders (physical agents)

    accidentRecord 220262530007
    ROAD FORK #52 MINE · 4609522

    Occupatnal illness not deg 1-6

    Accident narrative

    Employee did not incur an occupational injury. EE suffered a non-work-related medical event while standing beside a roof bolter. Employee was treated by EMS paramedic and taken to a local hospital, treated for dehydration and low blood sugar. We are submitting this report to abate citation number 5134629 and this report is to be classified as Degree 8 with (0) lost work days.

  14. Spot Inspections

    inspectionRecord F036047
    ROAD FORK #52 MINE · 4609522

    103(i) · 5.5 on-site hours reported

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

    violationRecord 5094511
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $10,569.00 proposed penalty

  16. Electric equipment; examination, testing and maintenance.

    violationRecord 5134600
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $313.00 proposed penalty

  17. Permissible electric face equipment; maintenance.

    violationRecord 5132599
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $592.00 proposed penalty

  18. Machinery and equipment; operation and maintenance.

    violationRecord 5132598
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S)

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

    violationRecord 5096689
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1714-3(a) · $1,431.00 proposed penalty

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

    violationRecord 5096687
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1714-3(a) · $1,431.00 proposed penalty

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

    violationRecord 5096686
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1714-3(a) · $1,126.00 proposed penalty

  22. Loading and haulage equipment; inspection and maintenance.

    violationRecord 5026763
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.1606(c) · $151.00 proposed penalty

  23. Spot Inspections

    inspectionRecord F036046
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.0 on-site hours reported

  24. Surface installations; general.

    violationRecord 5026762
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.200 · $151.00 proposed penalty

  25. Roof control plan.

    violationRecord 5094510
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $1,126.00 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.