← Brent Gerken; Michael J Gerken

Brent Gerken; Michael J Gerken 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. Housekeeping.

    violationRecord 5079184
    Bluffton Stone Company LLC. · 3300017

    30 CFR 56.20003(a)

  2. Requirement for container labels.

    violationRecord 5079183
    Bluffton Stone Company LLC. · 3300017

    30 CFR 47.41(a)

  3. Housekeeping.

    violationRecord 5079182
    Bluffton Stone Company LLC. · 3300017

    30 CFR 56.20003(a)

  4. Regular Safety and Health Inspection

    inspectionRecord F037264
    Bluffton Stone Company LLC. · 3300017

    0.0 on-site hours reported

  5. Regular Safety and Health Inspection

    inspectionRecord F04A3CB
    Clinton Plant · 2002886

    0.0 on-site hours reported

  6. Electrical conductors.

    violationRecord 5111483
    Clinton Plant · 2002886

    30 CFR 56.12004

  7. Regular Safety and Health Inspection

    inspectionRecord F031C6A
    Tecumseh Plant · 2003312

    4.0 on-site hours reported

  8. Handling of materials

    accidentRecord 220261890036
    Round Lake Sand and Gravel West Plt · 2003447

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee was changing a roller on the feeder conveyor, and the end of the roller fell down and landed on right-hand index finger splitting it open on both sides of finger.

  9. Regular Safety and Health Inspection

    inspectionRecord F031C60
    Custar Stone Company · 3300143

    8.0 on-site hours reported

  10. Regular Safety and Health Inspection

    inspectionRecord F031C5D
    Gerken Materials Inc · 3300033

    5.5 on-site hours reported

  11. Safety belts and lines.

    violationRecord 5116908
    Gerken Materials Inc · 3300033

    30 CFR 56.15005 · Significant and substantial (S&S) · $561.00 proposed penalty

  12. Violation — cited standard not reported

    violationRecord 5116907
    Gerken Materials Inc · 3300033
  13. Regular Safety and Health Inspection

    inspectionRecord F03AF6C
    Gerken Materials- Hillsdale Plant · 2002344

    10.5 on-site hours reported

  14. Brakes.

    violationRecord 5111417
    Gerken Materials- Hillsdale Plant · 2002344

    30 CFR 56.14101(a)(2) · $151.00 proposed penalty

  15. Berms or guardrails.

    violationRecord 5111416
    Gerken Materials- Hillsdale Plant · 2002344

    30 CFR 56.9300(b) · Significant and substantial (S&S) · $151.00 proposed penalty

  16. Electrical conductors.

    violationRecord 5076147
    Bluffton Stone Company LLC. · 3300017

    30 CFR 56.12004 · $151.00 proposed penalty

  17. Electrical conductors.

    violationRecord 5076146
    Bluffton Stone Company LLC. · 3300017

    30 CFR 56.12004 · $151.00 proposed penalty

  18. Electrical conductors.

    violationRecord 5076145
    Bluffton Stone Company LLC. · 3300017

    30 CFR 56.12004 · $151.00 proposed penalty

  19. Grounding circuit enclosures.

    violationRecord 5076144
    Bluffton Stone Company LLC. · 3300017

    30 CFR 56.12025 · $151.00 proposed penalty

  20. Regular Safety and Health Inspection

    inspectionRecord F037277
    Bluffton Stone Company LLC. · 3300017

    17.0 on-site hours reported

  21. Regular Safety and Health Inspection

    inspectionRecord F036D69
    Clinton Plant · 2002886

    10.0 on-site hours reported

  22. Brakes.

    violationRecord 5110488
    Clinton Plant · 2002886

    30 CFR 56.14101(a)(2) · $151.00 proposed penalty

  23. Regular Safety and Health Inspection

    inspectionRecord F03AF52
    Round Lake Sand and Gravel West Plt · 2003447

    11.5 on-site hours reported

  24. Unguarded conveyors with adjacent travelways.

    violationRecord 5110188
    Round Lake Sand and Gravel West Plt · 2003447

    30 CFR 56.14109(b)(1) · $151.00 proposed penalty

  25. Machinery, equipment, and tools.

    violationRecord 5110187
    Round Lake Sand and Gravel West Plt · 2003447

    30 CFR 56.14205 · Significant and substantial (S&S) · $226.00 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.