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Horizon Corporation safety activity

MSHA violations, accident reports and inspections across the current mine portfolio.

2025-01-01 – 2026-10-28Database snapshot · 2026-10-28

Safety activity

  1. Impoundment Spot Inspection

    inspectionRecord F017BE8
    OK and Hidden Treasure · 4202431

    6.5 on-site hours reported

  2. Verbal Hazard Complaint Inspections

    inspectionRecord F028618
    OK and Hidden Treasure · 4202431

    5.0 on-site hours reported

  3. Compliance Follow-up Inspection

    inspectionRecord F02860A
    OK and Hidden Treasure · 4202431

    2.0 on-site hours reported

  4. Safety defects; examination, correction and records.

    violationRecord 5053075
    OK and Hidden Treasure · 4202431

    30 CFR 56.14100(b) · $151.00 proposed penalty

  5. Safety defects; examination, correction and records.

    violationRecord 5053074
    OK and Hidden Treasure · 4202431

    30 CFR 56.14100(b) · $4,383.00 proposed penalty

  6. Safety defects; examination, correction and records.

    violationRecord 5053073
    OK and Hidden Treasure · 4202431

    30 CFR 56.14100(b) · $4,383.00 proposed penalty

  7. Horns and backup alarms.

    violationRecord 5053072
    OK and Hidden Treasure · 4202431

    30 CFR 56.14132(a) · $3,736.00 proposed penalty

  8. General requirements.

    violationRecord 5053071
    OK and Hidden Treasure · 4202431

    30 CFR 56.4200(b)(2) · $1,679.00 proposed penalty

  9. Horns and backup alarms.

    violationRecord 5053070
    OK and Hidden Treasure · 4202431

    30 CFR 56.14132(a) · $3,736.00 proposed penalty

  10. Requirement for container labels.

    violationRecord 5055478
    OK and Hidden Treasure · 4202431

    30 CFR 47.41(a) · $313.00 proposed penalty

  11. Warning signs.

    violationRecord 5055477
    OK and Hidden Treasure · 4202431

    30 CFR 56.4101 · $465.00 proposed penalty

  12. Inspection.

    violationRecord 5055476
    OK and Hidden Treasure · 4202431

    30 CFR 56.4201(a)(2) · $151.00 proposed penalty

  13. Safety defects; examination, correction and records.

    violationRecord 5053069
    OK and Hidden Treasure · 4202431

    30 CFR 56.14100(b) · $465.00 proposed penalty

  14. Insulation and fittings for power wires and cables.

    violationRecord 5053068
    OK and Hidden Treasure · 4202431

    30 CFR 56.12008 · $465.00 proposed penalty

  15. Inspection and cover plates.

    violationRecord 5055475
    OK and Hidden Treasure · 4202431

    30 CFR 56.12032 · $1,550.00 proposed penalty

  16. Requirement for container labels.

    violationRecord 5055474
    OK and Hidden Treasure · 4202431

    30 CFR 47.41(a) · $313.00 proposed penalty

  17. Safety defects; examination, correction and records.

    violationRecord 5055473
    OK and Hidden Treasure · 4202431

    30 CFR 56.14100(d) · $151.00 proposed penalty

  18. Horns and backup alarms.

    violationRecord 5055472
    OK and Hidden Treasure · 4202431

    30 CFR 56.14132(a) · $465.00 proposed penalty

  19. Inspection and cover plates.

    violationRecord 5055471
    OK and Hidden Treasure · 4202431

    30 CFR 56.12032 · $1,037.00 proposed penalty

  20. Safety defects; examination, correction and records.

    violationRecord 5055470
    OK and Hidden Treasure · 4202431

    30 CFR 56.14100(d) · $465.00 proposed penalty

  21. Requirement for container labels.

    violationRecord 5055469
    OK and Hidden Treasure · 4202431

    30 CFR 47.41(a) · $313.00 proposed penalty

  22. Protection of gas cylinder valves.

    violationRecord 5053067
    OK and Hidden Treasure · 4202431

    30 CFR 56.16006 · $1,037.00 proposed penalty

  23. Verbal Hazard Complaint Inspections

    inspectionRecord F028609
    OK and Hidden Treasure · 4202431

    0.0 on-site hours reported

  24. Regular Safety and Health Inspection

    inspectionRecord F028608
    OK and Hidden Treasure · 4202431

    46.5 on-site hours reported

  25. Powered haulage

    accidentRecord 220260440004
    OK and Hidden Treasure · 4202431

    Days away from work only

    Accident narrative

    A water truck air hose burst & the brakes locked on while going down a dirt road, incline 5.35%. The driver thought the brakes weren't working. EE tried the foot pedal & air actuator & gearing down. Once in neutral EE could not get it back in gear. EE steered the truck off road and jumped while going around 15-20 mph. Driver strained EE's hamstring.

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.