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U.S. Silica Energy Company 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. Requirement for container labels.

    violationRecord 5003879
    Lamesa Plant · 4105363

    30 CFR 47.41(a) · $432.00 proposed penalty

  2. 103 (g) Written Notification Hazard Complaint Inspectio

    inspectionRecord F0155A1
    Crane County Plant · 4105331

    3.0 on-site hours reported

  3. Slip or fall of person

    accidentRecord 220252050026
    Lamesa Plant · 4105363

    Dys awy frm wrk & restrctd act

    Accident narrative

    While descending a stairway, the EE missed a step and landed hard on the outside of right foot, resulting in a fracture to the metatarsal bone. The fracture wasn't discovered until a clinic visit on 7/14/25.

  4. Inspection.

    violationRecord 8736160
    Sparta, WI Plant · 4703644

    30 CFR 56.4201(a)(2)

  5. Regular Safety and Health Inspection

    inspectionRecord F006977
    Sparta, WI Plant · 4703644

    18.8 on-site hours reported

  6. Horns and backup alarms.

    violationRecord 9777372
    Crane County Plant · 4105331

    30 CFR 56.14132(b)(1) · $151.00 proposed penalty

  7. Regular Safety and Health Inspection

    inspectionRecord F01193F
    Crane County Plant · 4105331

    51.0 on-site hours reported

  8. Compliance Follow-up Inspection

    inspectionRecord F012402
    Crane County Plant · 4105331

    1.0 on-site hours reported

  9. Construction and maintenance of guards.

    violationRecord 9847201
    Lamesa Plant · 4105363

    30 CFR 56.14112(b) · $151.00 proposed penalty

  10. Regular Safety and Health Inspection

    inspectionRecord 6321941
    Lamesa Plant · 4105363

    41.3 on-site hours reported

  11. Fire

    accidentRecord 220250590005
    Sparta, WI Plant · 4703644

    Accident only

    Accident narrative

    While operating the Volvo 550 excavator a hydraulic leak started during operation that led to a fire in the engine compartment. The operator observed the fire and safely exited the equipment.

  12. Construction and maintenance of ladders.

    violationRecord 8736129
    Sparta, WI Plant · 4703644

    30 CFR 56.11003

  13. Regular Safety and Health Inspection

    inspectionRecord 6910000
    Sparta, WI Plant · 4703644

    15.5 on-site hours reported

  14. Compliance Follow-up Inspection

    inspectionRecord F0123F5
    Crane County Plant · 4105331

    1.5 on-site hours reported

  15. Moving machine parts.

    violationRecord 9994296
    Crane County Plant · 4105331

    30 CFR 56.14107(a) · $818.00 proposed penalty

  16. Snow and ice on walkways and travelways.

    violationRecord 9994295
    Crane County Plant · 4105331

    30 CFR 56.11016 · $165.00 proposed penalty

  17. Housekeeping.

    violationRecord 9994294
    Crane County Plant · 4105331

    30 CFR 56.20003(a) · Significant and substantial (S&S) · $818.00 proposed penalty

  18. Heat sources.

    violationRecord 9994293
    Crane County Plant · 4105331

    30 CFR 56.4500 · $165.00 proposed penalty

  19. Access to stationary electrical equipment or switchgear.

    violationRecord 9994292
    Crane County Plant · 4105331

    30 CFR 56.12019 · $165.00 proposed penalty

  20. Controls and switches.

    violationRecord 9994291
    Crane County Plant · 4105331

    30 CFR 56.12002 · $165.00 proposed penalty

  21. Housekeeping.

    violationRecord 9994290
    Crane County Plant · 4105331

    30 CFR 56.20003(a) · $165.00 proposed penalty

  22. First aid.

    violationRecord 9797000
    Crane County Plant · 4105331

    30 CFR 56.18010 · $366.00 proposed penalty

  23. Safety defects; examination, correction and records.

    violationRecord 9796999
    Crane County Plant · 4105331

    30 CFR 56.14100(b) · $165.00 proposed penalty

  24. Parking procedures for unattended equipment.

    violationRecord 9796998
    Crane County Plant · 4105331

    30 CFR 56.14207 · $366.00 proposed penalty

  25. Electrical conductors.

    violationRecord 9994289
    Crane County Plant · 4105331

    30 CFR 56.12004 · $165.00 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.