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Robertson's 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. Slip or fall of person

    accidentRecord 220261680022
    Palmdale · 0404803

    Days away from work only

    Accident narrative

    Miner was exiting a shaker deck, stepped wrong and rolled R-ankle.

  2. Powered haulage

    accidentRecord 220261390020
    Corona · 0405887

    Dys awy frm wrk & restrctd act

    Accident narrative

    Miner was conducting EE's plant walk facing the sand screw, which is a noisy area due to the shaker decks above, EE stated EE heard the skid steer operating, but when EE turned to EE's left to see where it was the skid steer knocked EE off EE's feet and into the bucket, causing shin and elbow injuries.

  3. Regular Safety and Health Inspection

    inspectionRecord F02C58E
    Juniper Flats · 0405097

    9.5 on-site hours reported

  4. General requirements.

    violationRecord 5166824
    Juniper Flats · 0405097

    30 CFR 56.4200(b) · $151.00 proposed penalty

  5. Moving machine parts.

    violationRecord 5166823
    Juniper Flats · 0405097

    30 CFR 56.14107(a) · $151.00 proposed penalty

  6. Moving machine parts.

    violationRecord 5166822
    Juniper Flats · 0405097

    30 CFR 56.14107(a) · $151.00 proposed penalty

  7. Regular Safety and Health Inspection

    inspectionRecord F02C58D
    Banning · 0402815

    4.5 on-site hours reported

  8. Horns and backup alarms.

    violationRecord 5103914
    Jean Plant · 2602520

    30 CFR 56.14132(a) · Significant and substantial (S&S) · $193.00 proposed penalty

  9. Construction and maintenance of guards.

    violationRecord 5103913
    Jean Plant · 2602520

    30 CFR 56.14112(b) · $151.00 proposed penalty

  10. Construction and maintenance of guards.

    violationRecord 5103912
    Jean Plant · 2602520

    30 CFR 56.14112 · $151.00 proposed penalty

  11. Regular Safety and Health Inspection

    inspectionRecord F023EF5
    Jean Plant · 2602520

    15.0 on-site hours reported

  12. Electrical conductors.

    violationRecord 5165148
    Ridgecrest Rock Plant · 0404163

    30 CFR 56.12004 · Significant and substantial (S&S) · $151.00 proposed penalty

  13. Impoundment Spot Inspection

    inspectionRecord F029C78
    Cabazon · 0402774

    0.5 on-site hours reported

  14. Impoundment Spot Inspection

    inspectionRecord F029C79
    Banning · 0402815

    0.8 on-site hours reported

  15. Regular Safety and Health Inspection

    inspectionRecord F013162
    Ridgecrest Rock Plant · 0404163

    4.0 on-site hours reported

  16. Impoundment Spot Inspection

    inspectionRecord F029C7A
    Redlands · 0404652

    0.8 on-site hours reported

  17. Eye protection.

    violationRecord 5165579
    El Cajon Quarry · 0400133

    30 CFR 56.15004 · Significant and substantial (S&S) · $313.00 proposed penalty

  18. Requirement for container labels.

    violationRecord 5165578
    El Cajon Quarry · 0400133

    30 CFR 47.41(a) · $151.00 proposed penalty

  19. Regular Safety and Health Inspection

    inspectionRecord F017878
    El Cajon Quarry · 0400133

    9.8 on-site hours reported

  20. Regular Safety and Health Inspection

    inspectionRecord F014E79
    Banning · 0402815

    6.0 on-site hours reported

  21. Regular Safety and Health Inspection

    inspectionRecord F01D848
    Rialto · 0405392

    12.0 on-site hours reported

  22. Regular Safety and Health Inspection

    inspectionRecord F014E78
    Corona · 0405887

    14.5 on-site hours reported

  23. Regular Safety and Health Inspection

    inspectionRecord F029C6C
    Lucerne Valley · 0405690

    5.0 on-site hours reported

  24. Handling of materials

    accidentRecord 220260230004
    Corona · 0405887

    Dys awy frm wrk & restrctd act

    Accident narrative

    Miner was moving a haul truck wheel chock and felt pain in EE's left shoulder. EE missed no days of work but has now been put on restrictions from EE's Dr. that won't allow EE to perform EE's work duties and will be off work until further notice as of 1/20/2026.

  25. Impoundment Spot Inspection

    inspectionRecord F029C68
    Banning · 0402815

    1.8 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.