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M-Class Mining LLC 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. Nonpermissible diesel-powered equipment; design and performance requirements.

    violationRecord 9549652
    MC#1 Mine · 1103189

    30 CFR 75.1909(b)(4) · $193.00 proposed penalty

  2. Nonpermissible diesel-powered equipment; design and performance requirements.

    violationRecord 9786787
    MC#1 Mine · 1103189

    30 CFR 75.1909(d) · $193.00 proposed penalty

  3. Spot Inspections

    inspectionRecord F005A55
    MC#1 Mine · 1103189

    103(i) · 6.5 on-site hours reported

  4. Maintenance of belt conveyors and belt conveyor entries.

    violationRecord 9786786
    MC#1 Mine · 1103189

    30 CFR 75.1731(a) · $209.00 proposed penalty

  5. Criteria—Belt conveyors.

    violationRecord 9786785
    MC#1 Mine · 1103189

    30 CFR 75.1403-5(g) · $151.00 proposed penalty

  6. Mechanical equipment guards.

    violationRecord 9789320
    MC#1 Mine · 1103189

    30 CFR 75.1722(a) · Significant and substantial (S&S) · $1,431.00 proposed penalty

  7. Accumulation of combustible materials.

    violationRecord 9789319
    MC#1 Mine · 1103189

    30 CFR 75.400 · $313.00 proposed penalty

  8. Fall of roof or back

    accidentRecord 220252340022
    MC#1 Mine · 1103189

    Accident only

    Accident narrative

    An unintentional roof fall occurred on 8/15/2025 at 3:35 am located at A slope sump in the slope runaround.

  9. Spot Inspections

    inspectionRecord F007192
    MC#1 Mine · 1103189

    103(i) · 6.0 on-site hours reported

  10. Non-Injury Accident Investigation

    inspectionRecord F009D0C
    MC#1 Mine · 1103189

    5.0 on-site hours reported

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

    violationRecord 9549651
    MC#1 Mine · 1103189

    30 CFR 75.202(a) · $226.00 proposed penalty

  12. Other safeguards.

    violationRecord 9549650
    MC#1 Mine · 1103189

    30 CFR 75.1403 · $193.00 proposed penalty

  13. Violation — cited standard not reported

    violationRecord 9789509
    MC#1 Mine · 1103189

  14. Mine ventilation plan; submission and approval.

    violationRecord 9784000
    MC#1 Mine · 1103189

    30 CFR 75.370(a)(1) · $151.00 proposed penalty

  15. Hazardous conditions and violations of mandatory health or safety standards; posting, correcting, and recording.

    violationRecord 9783999
    MC#1 Mine · 1103189

    30 CFR 75.363(a) · $193.00 proposed penalty

  16. Spot Inspections

    inspectionRecord 7006848
    MC#1 Mine · 1103189

    103(i) · 5.0 on-site hours reported

  17. Mine ventilation plan; submission and approval.

    violationRecord 9789471
    MC#1 Mine · 1103189

    30 CFR 75.370(a)(1) · $151.00 proposed penalty

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

    violationRecord 9783998
    MC#1 Mine · 1103189

    30 CFR 75.202(a) · $226.00 proposed penalty

  19. Maintenance of belt conveyors and belt conveyor entries.

    violationRecord 9549648
    MC#1 Mine · 1103189

    30 CFR 75.1731(a) · $209.00 proposed penalty

  20. Inspection of fire suppression devices.

    violationRecord 9549647
    MC#1 Mine · 1103189

    30 CFR 75.1107-16(b) · $193.00 proposed penalty

  21. Spot Inspections

    inspectionRecord 7006847
    MC#1 Mine · 1103189

    103(i) · 6.0 on-site hours reported

  22. Mine ventilation plan; submission and approval.

    violationRecord 9789470
    MC#1 Mine · 1103189

    30 CFR 75.370(a)(1) · $267.00 proposed penalty

  23. Accumulation of combustible materials.

    violationRecord 9786784
    MC#1 Mine · 1103189

    30 CFR 75.400 · $313.00 proposed penalty

  24. Nonpermissible diesel-powered equipment; electrical system design and performance requirements.

    violationRecord 9786783
    MC#1 Mine · 1103189

    30 CFR 75.1910(j) · $193.00 proposed penalty

  25. Machinery and equipment; operation and maintenance.

    violationRecord 9789469
    MC#1 Mine · 1103189

    30 CFR 75.1725(a) · Significant and substantial (S&S) · $12,723.00 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.