ACTIVE / OPERATOR PORTFOLIO

Iron Oak Atascosa LLC

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

MSHA OPERATOR ID0155113

MINE PORTFOLIO

1 of 1 mines and facilities

2025-01-01 – 2026-10-18. Active records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Atascosa4105317 · Active6/8 quarters reportedAtascosa, TXSurface · MSHA: Sand, Industrial NEC0401,864834353.5

LOCATION

Mine location

1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-18Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

83

17 significant & substantial (S&S)

  1. 2025 Q18
  2. 2025 Q27
  3. 2025 Q34
  4. 2025 Q40
  5. 2026 Q147
  6. 2026 Q21
  7. 2026 Q316
  8. 2026 Q4 *0

Accident records

4

1 records classified as fatality

  1. 2025 Q10
  2. 2025 Q21
  3. 2025 Q31
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q32
  8. 2026 Q4 *0

Proposed penalties · USD

391,338.00

65 of 83 violations with amounts

  1. 2025 Q12,237
  2. 2025 Q2906
  3. 2025 Q3864
  4. 2025 Q4—
  5. 2026 Q1387,331
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

353.50

14 inspections · 14 with hours

  1. 2025 Q134.25
  2. 2025 Q2183.25
  3. 2025 Q333.00
  4. 2025 Q4—
  5. 2026 Q172.75
  6. 2026 Q25.00
  7. 2026 Q325.25
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q1822,237.0000234.3
2025-Q270906.00115183.3
2025-Q341864.0010133.0
2025-Q400—000—
2026-Q14710387,331.0000172.8
2026-Q210—0035.0
2026-Q3164—20225.3
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. violation5005268
    Atascosa · 4105317

    56.20003(a) · $151.00 proposed

  2. inspectionF017456
    Atascosa · 4105317

    Regular Safety and Health Inspection · 33.0 on-site hours

  3. accident220251900003
    Atascosa · 4105317

    HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    EE was installing a sprocket segment on the track pad and you need to put it at a specific torque. EE was applying pressure to EE's ratchet when the internal gear slipped in the ratchet causing EE's momentum to go forward and hitting EE's face against the track pad.

  4. inspectionF013D15
    Atascosa · 4105317

    Spot Inspection · 13.5 on-site hours

  5. violation5003113
    Atascosa · 4105317

    56.12032 · $151.00 proposed

  6. inspectionF013D0E
    Atascosa · 4105317

    Spot Inspection · 1.5 on-site hours

  7. violation5003110
    Atascosa · 4105317

    56.20003(a) · $151.00 proposed

  8. violation5003109
    Atascosa · 4105317

    56.20003(a) · $151.00 proposed

  9. violation5003108
    Atascosa · 4105317

    56.14112(a)(1) · $151.00 proposed

  10. violation5003112
    Atascosa · 4105317

    56.12013(a) · $151.00 proposed

  11. violation5003111
    Atascosa · 4105317

    56.12019 · $151.00 proposed

  12. inspectionF013D0D
    Atascosa · 4105317

    Verbal Hazard Complaint Inspections · 19.3 on-site hours

  13. accident220251320013
    Atascosa · 4105317

    FALLING/SLIDING/ROLLING MATERIALS · FATALITY

    Accident narrative

    EE was operating an excavator in Pit 2 at SPS Atascosa. Pit 2 is located between two tailings ponds. 9:18 AM one of the tailings ponds breached causing tailings mixture to flow into the work site. Tailings mixture tipped over the excavator EE was operating cab side down. The front window broke, tailings mixture engulfed the cab & 75% of the vehicle. Employee could not escape.

  14. inspectionF00DFD8
    Atascosa · 4105317

    Spot Inspection · 0.0 on-site hours

  15. inspectionF00DFD4
    Atascosa · 4105317

    Fatal Accident Investigation · 149.0 on-site hours

  16. violation5004836
    Atascosa · 4105317

    Description not reported

  17. violation9793732
    Atascosa · 4105317

    56.12004 · $193.00 proposed

  18. violation9793731
    Atascosa · 4105317

    56.20003(a) · S&S · $288.00 proposed

  19. violation5000497
    Atascosa · 4105317

    56.20003(a) · S&S · $959.00 proposed

  20. violation5000496
    Atascosa · 4105317

    56.4101 · $151.00 proposed

  21. violation5000495
    Atascosa · 4105317

    47.41(a) · $151.00 proposed

  22. violation5000494
    Atascosa · 4105317

    56.12008 · $193.00 proposed

  23. violation5000493
    Atascosa · 4105317

    56.11003 · $151.00 proposed

  24. violation5000492
    Atascosa · 4105317

    56.14100(b) · $151.00 proposed

  25. inspection6939386
    Atascosa · 4105317

    103 (g) Written Notification Hazard Complaint Inspectio · 8.8 on-site hours

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.

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.