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American Gilsonite Company 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. Exits.

    violationRecord 9826661
    Bonanza Process Plant · 4202702

    30 CFR 56.4530 · $245.00 proposed penalty

  2. Regular Safety and Health Inspection

    inspectionRecord 6944292
    Bonanza Process Plant · 4202702

    11.5 on-site hours reported

  3. Permissible exposure level.

    violationRecord 9826659
    Bonanza Mines · 4200854

    30 CFR 62.130(a) · $151.00 proposed penalty

  4. Permissible exposure level.

    violationRecord 9826658
    Bonanza Mines · 4200854

    30 CFR 62.130(a) · $151.00 proposed penalty

  5. Shaft inspection and repair.

    violationRecord 9826657
    Bonanza Mines · 4200854

    30 CFR 57.19109 · Significant and substantial (S&S) · $755.00 proposed penalty

  6. Safety belts and lines.

    violationRecord 9826656
    Bonanza Mines · 4200854

    30 CFR 57.15005 · Significant and substantial (S&S) · $336.00 proposed penalty

  7. Regular Safety and Health Inspection

    inspectionRecord 6944291
    Bonanza Mines · 4200854

    31.5 on-site hours reported

  8. Correction of hazardous conditions.

    violationRecord 9826655
    Bonanza Mines · 4200854

    30 CFR 57.3200 · $151.00 proposed penalty

  9. Records of training.

    violationRecord 5050703
    COTTONWOOD MINES · 4202044

    30 CFR 48.9(a) · $151.00 proposed penalty

  10. Brakes.

    violationRecord 5050702
    COTTONWOOD MINES · 4202044

    30 CFR 57.14101(a)(3) · $226.00 proposed penalty

  11. Horns and backup alarms for surface equipment.

    violationRecord 5050701
    COTTONWOOD MINES · 4202044

    30 CFR 57.14132(b)(1) · $151.00 proposed penalty

  12. Slip or fall of person

    accidentRecord 220250490046
    Bonanza Mines · 4200854

    Days restricted activity only

    Accident narrative

    A miner was removing ice from a shaft wall when the miner slipped and fell catching self with their right arm. The miner was evaluated and given a full release with no restrictions. On Tuesday February 11, 2025, the miner was reevaluated and given a work release with restrictions pending an MRI. MRI results showed a partial tendon tear and small fracture in the right shoulder.

  13. Regular Safety and Health Inspection

    inspectionRecord 6944064
    COTTONWOOD MINES · 4202044

    25.0 on-site hours reported

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.