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← No 4 Mine

No 4 Mine safety activity

MSHA violations, accident reports and inspections.

2025-01-01 – 2026-10-31Database snapshot · 2026-10-31

Safety activity

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

    violationRecord 5062723

    30 CFR 75.1910(f) · $288.00 proposed penalty

  2. Maintenance of diesel-powered equipment.

    violationRecord 5062722

    30 CFR 75.1914(a) · $288.00 proposed penalty

  3. Spot Inspections

    inspectionRecord F014C18

    103(i) · 7.5 on-site hours reported

  4. Accumulation of combustible materials.

    violationRecord 5190060

    30 CFR 75.400 · $549.00 proposed penalty

  5. Electric equipment; examination, testing and maintenance.

    violationRecord 5190059

    30 CFR 75.512 · $313.00 proposed penalty

  6. Ventilation controls.

    violationRecord 5190058

    30 CFR 75.333(b)(3) · $288.00 proposed penalty

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

    violationRecord 5190057

    30 CFR 75.202(a) · $592.00 proposed penalty

  8. Mine ventilation plan; submission and approval.

    violationRecord 5190056

    30 CFR 75.370(a)(1) · $336.00 proposed penalty

  9. Criteria—Haulage; general.

    violationRecord 5061497

    30 CFR 75.1403-10(f)

  10. Atmospheric monitoring systems.

    violationRecord 5190055

    30 CFR 75.351(d)(2) · $288.00 proposed penalty

  11. Inspection of fire suppression devices.

    violationRecord 5190054

    30 CFR 75.1107-16(b) · Significant and substantial (S&S) · $1,431.00 proposed penalty

  12. Condition and examination of firefighting equipment.

    violationRecord 5190053

    30 CFR 75.1100-3 · $288.00 proposed penalty

  13. Atmospheric monitoring systems.

    violationRecord 5190052

    30 CFR 75.351(d)(2) · $288.00 proposed penalty

  14. Maintenance of belt conveyors and belt conveyor entries.

    violationRecord 5190051

    30 CFR 75.1731(a) · $313.00 proposed penalty

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

    violationRecord 5062721

    30 CFR 75.202(a) · Significant and substantial (S&S) · $2,936.00 proposed penalty

  16. Maintenance of incombustible content of rock dust.

    violationRecord 5061499

    30 CFR 75.403 · $313.00 proposed penalty

  17. Spot Inspections

    inspectionRecord F025C27

    103(i) · 6.5 on-site hours reported

  18. Accumulation of combustible materials.

    violationRecord 5061498

    30 CFR 75.400 · $549.00 proposed penalty

  19. Maintenance of belt conveyors and belt conveyor entries.

    violationRecord 5190050

    30 CFR 75.1731(a) · $313.00 proposed penalty

  20. Maintenance of belt conveyors and belt conveyor entries.

    violationRecord 5190049

    30 CFR 75.1731(a) · $313.00 proposed penalty

  21. Roof bolting.

    violationRecord 5190048

    30 CFR 75.204(c)(1) · $288.00 proposed penalty

  22. Ventilation controls.

    violationRecord 5062720

    30 CFR 75.333(e)(1)(i) · $226.00 proposed penalty

  23. Ventilation controls.

    violationRecord 5062719

    30 CFR 75.333(e)(1)(ii) · $288.00 proposed penalty

  24. Ventilation controls.

    violationRecord 5062718

    30 CFR 75.333(h) · $313.00 proposed penalty

  25. Accumulation of combustible materials.

    violationRecord 5062717

    30 CFR 75.400 · $549.00 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.

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.