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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 5096828
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.503 · $226.00 proposed penalty

  2. Roof control plan.

    violationRecord 5096827
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $3,448.00 proposed penalty

  3. Methane monitors.

    violationRecord 5090842
    ROAD FORK #52 MINE · 4609522

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

  4. Roof control plan.

    violationRecord 5090841
    ROAD FORK #52 MINE · 4609522

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

  5. Diesel equipment inventory.

    violationRecord 5131311
    ROAD FORK #52 MINE · 4609522

    30 CFR 72.520(b) · $151.00 proposed penalty

  6. Spot Inspections

    inspectionRecord F0107DD
    ROAD FORK #52 MINE · 4609522

    103(i) · 19.0 on-site hours reported

  7. Health Technical Investigation

    inspectionRecord F02EDEF
    ROAD FORK #52 MINE · 4609522

    6.5 on-site hours reported

  8. Mine ventilation plan; submission and approval.

    violationRecord 5131310
    ROAD FORK #52 MINE · 4609522

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

  9. Roof control plan.

    violationRecord 5096826
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.220(a)(1) · $1,126.00 proposed penalty

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

    violationRecord 5096825
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.202(a) · Significant and substantial (S&S) · $4,749.00 proposed penalty

  11. Methane monitors.

    violationRecord 5090840
    ROAD FORK #52 MINE · 4609522

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

  12. Methane monitors.

    violationRecord 5090839
    ROAD FORK #52 MINE · 4609522

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

  13. Rock dusting.

    violationRecord 5090838
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.402 · $336.00 proposed penalty

  14. Spot Inspection

    inspectionRecord F014247
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    2.5 on-site hours reported

  15. Travelways at surface installations.

    violationRecord 5023987
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    30 CFR 77.205(a) · $151.00 proposed penalty

  16. Slip or fall of person

    accidentRecord 220251670005
    Mammoth Coal Processing Pl & Riv Tipple · 4603317

    Dys awy frm wrk & restrctd act

    Accident narrative

    Worker was walking on 2nd floor of transfer. EE stepped on unsecured decking. The decking slipped and EE fell to the floor below. EE hurt EE's knee in the initial fall and then EE's chest when EE fell over after landing. EE was wearing fall protection but was not tied off.

  17. Electric equipment; examination, testing and maintenance.

    violationRecord 9839888
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $288.00 proposed penalty

  18. Communications facilities; refuge alternatives.

    violationRecord 5091085
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1600-3(a)(1) · $1,320.00 proposed penalty

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

    violationRecord 5091084
    ROAD FORK #52 MINE · 4609522

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

  20. Electric equipment; examination, testing and maintenance.

    violationRecord 5091083
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $288.00 proposed penalty

  21. Mining methods.

    violationRecord 5090948
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.203(e)(1) · $366.00 proposed penalty

  22. Mine ventilation plan; submission and approval.

    violationRecord 5131505
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.370(a)(1) · $883.00 proposed penalty

  23. Electric equipment; examination, testing and maintenance.

    violationRecord 5131504
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.512 · $288.00 proposed penalty

  24. Temporary notations, revisions, and supplements.

    violationRecord 5096822
    ROAD FORK #52 MINE · 4609522

    30 CFR 75.1202-1(b)(3) · $151.00 proposed penalty

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

    violationRecord 5096821
    ROAD FORK #52 MINE · 4609522

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