ACTIVE / OPERATOR PORTFOLIO

Thompson Materials

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

MSHA OPERATOR ID0170973

MINE PORTFOLIO

5 of 5 mines and facilities

2025-01-01 – 2026-10-13. Active records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Aubrye Pit4105603 · Active5/8 quarters reportedLubbock, TXSurface · MSHA: Sand, Common07,2227011.5
Guns Up4105689 · Active6/8 quarters reportedLynn, TXSurface · MSHA: Construction Sand and Gravel05,0957016.8
Mertzon Quarry4105713 · Active6/8 quarters reportedIrion, TXSurface · MSHA: Construction Sand and Gravel02,6759022.5
MORELAND PIT4105680 · Active6/8 quarters reportedMidland, TXSurface · MSHA: Construction Sand and Gravel05,77014043.5
Portable #34105485 · Active5/8 quarters reportedMidland, TXSurface · MSHA: Crushed, Broken Stone NEC03,2356021.8

LOCATION

Portfolio map

5 of 5 mines with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-13Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

43

5 significant & substantial (S&S)

  1. 2025 Q112
  2. 2025 Q25
  3. 2025 Q38
  4. 2025 Q40
  5. 2026 Q111
  6. 2026 Q20
  7. 2026 Q37
  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

6,314.00

36 of 43 violations with amounts

  1. 2025 Q12,598
  2. 2025 Q2755
  3. 2025 Q31,286
  4. 2025 Q4—
  5. 2026 Q11,675
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

116.00

25 inspections · 25 with hours

  1. 2025 Q117.25
  2. 2025 Q24.50
  3. 2025 Q322.00
  4. 2025 Q4—
  5. 2026 Q127.75
  6. 2026 Q215.00
  7. 2026 Q329.50
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q11232,598.0000517.3
2025-Q250755.000054.5
2025-Q3801,286.0000422.0
2025-Q400—000—
2026-Q11121,675.0000527.8
2026-Q200—00315.0
2026-Q370—00329.5
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF014F0B
    Portable #3 · 4105485

    Regular Safety and Health Inspection · 10.0 on-site hours

  2. violation5088834
    Portable #3 · 4105485

    56.12001

  3. violation5088833
    Portable #3 · 4105485

    56.4203

  4. violation5088832
    Portable #3 · 4105485

    56.4402

  5. inspectionF014F0A
    MORELAND PIT · 4105680

    Regular Safety and Health Inspection · 15.5 on-site hours

  6. violation5088831
    MORELAND PIT · 4105680

    56.4402

  7. violation5088830
    MORELAND PIT · 4105680

    56.12032

  8. violation5088829
    MORELAND PIT · 4105680

    56.14107(a)

  9. violation5088828
    MORELAND PIT · 4105680

    56.12008

  10. inspectionF043C8A
    Mertzon Quarry · 4105713

    Spot Inspection · 4.0 on-site hours

  11. inspectionF0294D2
    Aubrye Pit · 4105603

    Regular Safety and Health Inspection · 4.0 on-site hours

  12. inspectionF0294CF
    Guns Up · 4105689

    Regular Safety and Health Inspection · 7.0 on-site hours

  13. inspectionF03102E
    Mertzon Quarry · 4105713

    Regular Safety and Health Inspection · 4.0 on-site hours

  14. inspectionF0374F6
    Aubrye Pit · 4105603

    Regular Safety and Health Inspection · 3.8 on-site hours

  15. violation5003996
    Aubrye Pit · 4105603

    50.30(a) · $151.00 proposed

  16. violation5003995
    Aubrye Pit · 4105603

    50.30(a) · $151.00 proposed

  17. violation5003994
    Aubrye Pit · 4105603

    56.1000 · $151.00 proposed

  18. inspectionF02C157
    Portable #3 · 4105485

    Regular Safety and Health Inspection · 1.8 on-site hours

  19. inspectionF02C156
    MORELAND PIT · 4105680

    Regular Safety and Health Inspection · 14.0 on-site hours

  20. violation5173045
    MORELAND PIT · 4105680

    56.14112(a) · $151.00 proposed

  21. violation5173044
    MORELAND PIT · 4105680

    56.14112(a)(2) · $151.00 proposed

  22. violation5173043
    MORELAND PIT · 4105680

    56.20003(a) · S&S · $151.00 proposed

  23. violation5173042
    MORELAND PIT · 4105680

    56.14107(a) · $151.00 proposed

  24. inspectionF020C17
    Guns Up · 4105689

    Regular Safety and Health Inspection · 4.3 on-site hours

  25. violation5008060
    Guns Up · 4105689

    56.14100(b) · $151.00 proposed

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-13.

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.