← Rio Materials LLC

Rio Materials LLC 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 F028989
    Rio Materials · 4105157

    8.8 on-site hours reported

  2. Requirement for container labels.

    violationRecord 5178201
    Rio Materials · 4105157

    30 CFR 47.41(a) · $151.00 proposed penalty

  3. Safety can use.

    violationRecord 5002400
    Rio Materials · 4105157

    30 CFR 56.4402 · $151.00 proposed penalty

  4. Safety defects; examination, correction and records.

    violationRecord 5002399
    Rio Materials · 4105157

    30 CFR 56.14100(b) · $151.00 proposed penalty

  5. Moving machine parts.

    violationRecord 5002392
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.14107(a) · Significant and substantial (S&S) · $1,037.00 proposed penalty

  6. Housekeeping.

    violationRecord 5002391
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.20003(a) · Significant and substantial (S&S) · $697.00 proposed penalty

  7. Housekeeping.

    violationRecord 5002390
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.20003(b) · Significant and substantial (S&S) · $697.00 proposed penalty

  8. Inspection.

    violationRecord 5002389
    Plum Aggregate Operating Company · 4104996

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

  9. Regular Safety and Health Inspection

    inspectionRecord F028986
    Plum Aggregate Operating Company · 4104996

    9.5 on-site hours reported

  10. Regular Safety and Health Inspection

    inspectionRecord F028968
    Rio Materials · 4105157

    6.5 on-site hours reported

  11. Guarding electrical connections and resistor grids.

    violationRecord 5002326
    Rio Materials · 4105157

    30 CFR 56.12023 · $151.00 proposed penalty

  12. Safety defects; examination, correction and records.

    violationRecord 5002325
    Rio Materials · 4105157

    30 CFR 56.14100(b) · $151.00 proposed penalty

  13. Safe access.

    violationRecord 5002324
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.11001 · $151.00 proposed penalty

  14. Safety defects; examination, correction and records.

    violationRecord 5002323
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.14100(b) · $151.00 proposed penalty

  15. Safe access.

    violationRecord 5002322
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.11001 · $151.00 proposed penalty

  16. Regular Safety and Health Inspection

    inspectionRecord F028967
    Plum Aggregate Operating Company · 4104996

    14.0 on-site hours reported

  17. Regular Safety and Health Inspection

    inspectionRecord F01AE1F
    Rio Materials · 4105157

    8.3 on-site hours reported

  18. Electrical conductors.

    violationRecord 5007838
    Rio Materials · 4105157

    30 CFR 56.12004 · $151.00 proposed penalty

  19. Construction and maintenance of guards.

    violationRecord 5007837
    Rio Materials · 4105157

    30 CFR 56.14112(b) · Significant and substantial (S&S) · $226.00 proposed penalty

  20. Berms or guardrails.

    violationRecord 5007836
    Rio Materials · 4105157

    30 CFR 56.9300(b) · $151.00 proposed penalty

  21. Compliance Follow-up Inspection

    inspectionRecord F01AE1D
    Plum Aggregate Operating Company · 4104996

    1.5 on-site hours reported

  22. Construction and maintenance of guards.

    violationRecord 5007832
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.14112(b) · Significant and substantial (S&S) · $226.00 proposed penalty

  23. Examination of working places.

    violationRecord 5007831
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.18002(a) · Significant and substantial (S&S) · $226.00 proposed penalty

  24. Construction and maintenance of guards.

    violationRecord 5007830
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.14112(b) · Significant and substantial (S&S) · $226.00 proposed penalty

  25. Housekeeping.

    violationRecord 5007829
    Plum Aggregate Operating Company · 4104996

    30 CFR 56.20003(a) · Significant and substantial (S&S) · $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.