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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. Machinery and equipment; operation and maintenance.

    violationRecord 5097307
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $3,184.00 proposed penalty

  2. Preshift examination at fixed intervals.

    violationRecord 5096647
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.360(b)(3) · Significant and substantial (S&S)

  3. Accumulation of combustible materials.

    violationRecord 5096646
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.400 · Significant and substantial (S&S)

  4. Other safeguards.

    violationRecord 5096645
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1403 · Significant and substantial (S&S) · $755.00 proposed penalty

  5. Ventilation controls.

    violationRecord 5133275
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.333(d)(3) · $336.00 proposed penalty

  6. Spot Inspections

    inspectionRecord F005E87
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.5 on-site hours reported

  7. Methane monitors.

    violationRecord 5097306
    ROAD FORK #52 MINE · 4609522

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

  8. Methane monitors.

    violationRecord 5097305
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.342(c)(2) · $151.00 proposed penalty

  9. Mine ventilation plan; submission and approval.

    violationRecord 5094797
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $504.00 proposed penalty

  10. Maintenance of belt conveyors and belt conveyor entries.

    violationRecord 5094796
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1731(b) · $151.00 proposed penalty

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

    violationRecord 5094795
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $2,312.00 proposed penalty

  12. Spot Inspections

    inspectionRecord F005E86
    ROAD FORK #52 MINE · 4609522

    103(i) · 6.0 on-site hours reported

  13. Methane monitors.

    violationRecord 5097304
    ROAD FORK #52 MINE · 4609522

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

  14. Impoundment Spot Inspection

    inspectionRecord F02AF43
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    3.0 on-site hours reported

  15. 103 (g) Written Notification Hazard Complaint Inspectio

    inspectionRecord F00E0D1
    ROAD FORK #52 MINE · 4609522

    6.5 on-site hours reported

  16. Methane monitors.

    violationRecord 5099723
    ROAD FORK #52 MINE · 4609522

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

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

    violationRecord 5133274
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.701 · $336.00 proposed penalty

  18. Loading and haulage equipment; inspection and maintenance.

    violationRecord 5133273
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1606(c) · $151.00 proposed penalty

  19. Loading and haulage equipment; inspection and maintenance.

    violationRecord 5133272
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1606(c) · $151.00 proposed penalty

  20. Loading and haulage equipment; installations.

    violationRecord 5133271
    ROAD FORK #52 MINE · 4609522

    30 CFR 77.1605(d) · $151.00 proposed penalty

  21. Approval of other fire suppression devices.

    violationRecord 5133270
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1107-13(g) · $151.00 proposed penalty

  22. Mechanical equipment guards.

    violationRecord 5133269
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1722(a) · Significant and substantial (S&S) · $2,712.00 proposed penalty

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

    violationRecord 5133268
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.701 · $151.00 proposed penalty

  24. Permanent splicing of trailing cables.

    violationRecord 5094790
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.604(b) · $755.00 proposed penalty

  25. Roof control plan.

    violationRecord 5094789
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $697.00 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.