ALL STATUSES / OPERATOR PORTFOLIO

Onyx Crushing AZ LLC

Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.

MSHA OPERATOR ID0192753

MINE PORTFOLIO

4 of 4 mines and facilities

2025-01-01 – 2026-10-17. All statuses records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Plant 10203520 · IntermittentYuma, AZSurface · MSHA: Construction Sand and Gravel——3017.0
Plant 20203486 · IntermittentMaricopa, AZSurface · MSHA: Sand, Common——004.8
PLANT 30203523 · IntermittentLa Paz, AZSurface · MSHA: Construction Sand and Gravel——2025.3
Plant 40203522 · Temporarily IdledYuma, AZSurface · MSHA: Sand, Industrial NEC——100.3

LOCATION

Portfolio map

4 of 4 mines with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-17Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

6

1 significant & substantial (S&S)

  1. 2025 Q11
  2. 2025 Q21
  3. 2025 Q32
  4. 2025 Q41
  5. 2026 Q11
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Accident records

0

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

1,513.00

5 of 6 violations with amounts

  1. 2025 Q1151
  2. 2025 Q2151
  3. 2025 Q3909
  4. 2025 Q4151
  5. 2026 Q1151
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

47.25

9 inspections · 9 with hours

  1. 2025 Q11.25
  2. 2025 Q26.25
  3. 2025 Q32.00
  4. 2025 Q414.00
  5. 2026 Q110.50
  6. 2026 Q213.25
  7. 2026 Q3—
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q110151.000021.3
2025-Q210151.000016.3
2025-Q321909.000012.0
2025-Q410151.0000114.0
2026-Q110151.0000210.5
2026-Q200—00213.3
2026-Q300—000—
2026-Q4 *00—000—

Most cited CFR sections

All violations issued in the selected period. Counts combine subsections.

Safety activity

  1. inspection6949063
    PLANT 3 · 0203523

    Compliance Follow-up Inspection · 11.5 on-site hours

  2. inspectionF020523
    Plant 2 · 0203486

    Verbal Hazard Complaint Inspections · 1.8 on-site hours

  3. inspectionF020520
    Plant 2 · 0203486

    Regular Safety and Health Inspection · 3.0 on-site hours

  4. violation5059358
    PLANT 3 · 0203523

    62.120 · $151.00 proposed

  5. inspectionF027837
    PLANT 3 · 0203523

    Regular Safety and Health Inspection · 7.5 on-site hours

  6. inspectionF032BCE
    Plant 1 · 0203520

    Regular Safety and Health Inspection · 14.0 on-site hours

  7. violation5059003
    Plant 1 · 0203520

    56.12004 · $151.00 proposed

  8. inspectionF014860
    Plant 1 · 0203520

    Spot Inspection · 2.0 on-site hours

  9. violation5054352
    Plant 1 · 0203520

    56.15005 · S&S · $909.00 proposed

  10. violation5054351
    Plant 1 · 0203520

    Description not reported

  11. violation5052823
    PLANT 3 · 0203523

    56.12028 · $151.00 proposed

  12. inspection6949036
    PLANT 3 · 0203523

    Regular Safety and Health Inspection · 6.3 on-site hours

  13. violation9909276
    Plant 4 · 0203522

    56.1000 · $151.00 proposed

  14. inspectionF00BD66
    Plant 4 · 0203522

    Mine Idle Activity · 0.3 on-site hours

  15. inspectionF00BD64
    Plant 1 · 0203520

    Regular Safety and Health Inspection · 1.0 on-site hours

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-17.

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.

CFR headings link to the current Title 30 index; they are not historical legal determinations.

SELECTED PORTFOLIO

1 linked controller.

Relationships reflect the selected mine status and current MSHA controller/operator fields.