← David D. Duffield; Luke B. Duffield

David D. Duffield; Luke B. Duffield 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. Regular Safety and Health Inspection

    inspectionRecord F03A51F
    Duffield Holdings Materials · 0300911

    7.5 on-site hours reported

  2. Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.

    violationRecord 5170136
    Duffield Holdings Materials · 0300911

    30 CFR 50.30(a) · $151.00 proposed penalty

  3. Berms or guardrails.

    violationRecord 5170135
    Duffield Holdings Materials · 0300911

    30 CFR 56.9300(a) · $151.00 proposed penalty

  4. Brakes.

    violationRecord 5170134
    Duffield Holdings Materials · 0300911

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

  5. Regular Safety and Health Inspection

    inspectionRecord F03A50B
    Duffield Holdings Materials · 0300911

    7.8 on-site hours reported

  6. Brakes.

    violationRecord 5170043
    Duffield Holdings Materials · 0300911

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

  7. Requirement for container labels.

    violationRecord 5170042
    Duffield Holdings Materials · 0300911

    30 CFR 47.41(a) · $151.00 proposed penalty

  8. Electrical conductors.

    violationRecord 5170041
    Duffield Holdings Materials · 0300911

    30 CFR 56.12004 · $151.00 proposed penalty

  9. Moving machine parts.

    violationRecord 5170040
    Duffield Holdings Materials · 0300911

    30 CFR 56.14107(a) · $151.00 proposed penalty

  10. Construction and maintenance of guards.

    violationRecord 5170039
    Duffield Holdings Materials · 0300911

    30 CFR 56.14112(a)(1) · $151.00 proposed penalty

  11. Regular Safety and Health Inspection

    inspectionRecord F0151F3
    Duffield Holdings Materials · 0300911

    15.3 on-site hours reported

  12. Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.

    violationRecord 5000301
    Duffield Holdings Materials · 0300911

    30 CFR 50.30(a) · $151.00 proposed penalty

  13. Combustible waste.

    violationRecord 5000300
    Duffield Holdings Materials · 0300911

    30 CFR 56.4104(b) · $151.00 proposed penalty

  14. Regular Safety and Health Inspection

    inspectionRecord F00690D
    Duffield Holdings Materials · 0300911

    6.8 on-site hours reported

  15. Correction of dangerous conditions.

    violationRecord 5000238
    Duffield Holdings Materials · 0300911

    30 CFR 56.12030 · $151.00 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.