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Black Hills Bentonite-A Limited Liability Co 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. Slip or fall of person

    accidentRecord 220262660004
    HT Plant · 4801539

    Days away from work only

    Accident narrative

    EE was walking on railcars with an SRL and a trolley. The cable became wrapped under a bolt on a product downspout, stopping the trolley from following the EE the SRL cable maxed out and pulled the EE backward and off the railcar. EE has a laceration on left leg and a small cut on EE's head. New video angle supports this amendment.

  2. Verbal Hazard Complaint Inspections

    inspectionRecord F0065ED
    Mills Plant · 4800617

    3.0 on-site hours reported

  3. Regular Safety and Health Inspection

    inspectionRecord F03AB21
    TENSLEEP MINE · 4800954

    8.3 on-site hours reported

  4. Examination of working places.

    violationRecord 5038938
    TENSLEEP MINE · 4800954

    30 CFR 56.18002 · $151.00 proposed penalty

  5. Berms or guardrails.

    violationRecord 5038937
    TENSLEEP MINE · 4800954

    30 CFR 56.9300(b) · Significant and substantial (S&S) · $226.00 proposed penalty

  6. Parking procedures for unattended equipment.

    violationRecord 5038936
    WORLAND PLANT · 4800987

    30 CFR 56.14207 · $151.00 proposed penalty

  7. Regular Safety and Health Inspection

    inspectionRecord F03AB20
    WORLAND PLANT · 4800987

    4.5 on-site hours reported

  8. Regular Safety and Health Inspection

    inspectionRecord F00B229
    HT Plant · 4801539

    7.0 on-site hours reported

  9. Closure of valves.

    violationRecord 5031294
    HT Plant · 4801539

    30 CFR 56.4603(b) · $151.00 proposed penalty

  10. Regular Safety and Health Inspection

    inspectionRecord F03AB19
    Mills Plant · 4800617

    6.0 on-site hours reported

  11. Testing grounding systems.

    violationRecord 5038927
    Mills Plant · 4800617

    30 CFR 56.12028 · $151.00 proposed penalty

  12. Housekeeping.

    violationRecord 5038926
    Mills Plant · 4800617

    30 CFR 56.20003(b) · $151.00 proposed penalty

  13. Identification of power switches.

    violationRecord 5038925
    Mills Plant · 4800617

    30 CFR 56.12018 · Significant and substantial (S&S) · $883.00 proposed penalty

  14. Housekeeping.

    violationRecord 5038924
    Mills Plant · 4800617

    30 CFR 56.20003(a) · $151.00 proposed penalty

  15. Identification of power switches.

    violationRecord 5038923
    Mills Plant · 4800617

    30 CFR 56.12018 · $151.00 proposed penalty

  16. Procedures during repairs or maintenance.

    violationRecord 5033776
    Casper Plant · 4800243

    30 CFR 56.14105 · Significant and substantial (S&S)

  17. Machinery

    accidentRecord 220261260015
    Casper Plant · 4800243

    Days away from work only

    Accident narrative

    EE climbed into the chute of the packer system to lube the roller without locking out/tagging out packer. EE's left hand was caught between the conveyor and the closest roller.

  18. Non-Fatal Accident Investigation

    inspectionRecord F010EE3
    Casper Plant · 4800243

    5.5 on-site hours reported

  19. Violation — cited standard not reported

    violationRecord 5033775
    Casper Plant · 4800243

  20. Regular Safety and Health Inspection

    inspectionRecord F010EE1
    Casper Plant · 4800243

    4.8 on-site hours reported

  21. Temporary, portable containers.

    violationRecord 5033763
    Casper Plant · 4800243

    30 CFR 47.44(b) · $151.00 proposed penalty

  22. Inspection.

    violationRecord 5033762
    Casper Plant · 4800243

    30 CFR 56.4201(b) · $151.00 proposed penalty

  23. Correction of dangerous conditions.

    violationRecord 5033761
    Casper Plant · 4800243

    30 CFR 56.12030 · $151.00 proposed penalty

  24. Powered haulage

    accidentRecord 220260630008
    TENSLEEP MINE · 4800954

    Days away from work only

    Accident narrative

    EE said the scraper seat was loose all day and jostled EE as EE drove it during EE's entire shift. EE complained of lower back pain.

  25. Regular Safety and Health Inspection

    inspectionRecord F0065D5
    WORLAND PLANT · 4800987

    5.0 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.