ALL STATUSES / OPERATOR PORTFOLIO

GCC Trident LLC

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

MSHA OPERATOR ID0158814

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
Black Butte Mine2402423 · IntermittentMeagher, MTSurface · MSHA: Iron Ore——001.0
Trident Plant & Quarry2400014 · ActiveGallatin, MTFacility · MSHA: Cement——285112.5
Geyser2402641 · AbandonedJudith Basin, MTSurface · MSHA: Gypsum——00—
Lingshire Gypsum Mine2402798 · Temporarily IdledMeagher, MTSurface · MSHA: Gypsum——208.5

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

30

2 significant & substantial (S&S)

  1. 2025 Q10
  2. 2025 Q22
  3. 2025 Q31
  4. 2025 Q416
  5. 2026 Q11
  6. 2026 Q27
  7. 2026 Q33
  8. 2026 Q4 *0

Accident records

5

0 records classified as fatality

  1. 2025 Q11
  2. 2025 Q22
  3. 2025 Q31
  4. 2025 Q41
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

7,209.00

30 of 30 violations with amounts

  1. 2025 Q1—
  2. 2025 Q2302
  3. 2025 Q3151
  4. 2025 Q45,081
  5. 2026 Q1151
  6. 2026 Q21,071
  7. 2026 Q3453
  8. 2026 Q4 *—

On-site inspection hours

122.00

11 inspections · 11 with hours

  1. 2025 Q1—
  2. 2025 Q216.50
  3. 2025 Q33.25
  4. 2025 Q449.75
  5. 2026 Q18.75
  6. 2026 Q243.25
  7. 2026 Q30.50
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q100—100—
2025-Q220302.0020216.5
2025-Q310151.001013.3
2025-Q41625,081.0010349.8
2026-Q110151.000028.8
2026-Q2701,071.0000143.3
2026-Q330453.000020.5
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF03673A
    Black Butte Mine · 2402423

    Mine Idle Activity · 0.5 on-site hours

  2. inspectionF020E0D
    Trident Plant & Quarry · 2400014

    Spot Inspection · 0.0 on-site hours

  3. violation5056019
    Trident Plant & Quarry · 2400014

    50.10(d) · $151.00 proposed

  4. violation8761112
    Trident Plant & Quarry · 2400014

    47.41(a) · $151.00 proposed

  5. violation8761111
    Trident Plant & Quarry · 2400014

    50.20-7 · $151.00 proposed

  6. violation8761110
    Trident Plant & Quarry · 2400014

    56.19120 · $151.00 proposed

  7. violation8761109
    Trident Plant & Quarry · 2400014

    56.14205 · $151.00 proposed

  8. violation8761108
    Trident Plant & Quarry · 2400014

    56.14112(a)(1) · $151.00 proposed

  9. violation5053394
    Trident Plant & Quarry · 2400014

    56.19120 · $151.00 proposed

  10. violation5053393
    Trident Plant & Quarry · 2400014

    56.12018 · $151.00 proposed

  11. inspectionF038C29
    Trident Plant & Quarry · 2400014

    Regular Safety and Health Inspection · 43.3 on-site hours

  12. violation8761107
    Trident Plant & Quarry · 2400014

    56.14205 · $165.00 proposed

  13. violation8761106
    Trident Plant & Quarry · 2400014

    56.12032 · $151.00 proposed

  14. inspectionF0153B5
    Lingshire Gypsum Mine · 2402798

    Mine Idle Activity · 5.3 on-site hours

  15. violation9826782
    Lingshire Gypsum Mine · 2402798

    56.1000 · $151.00 proposed

  16. inspection6948695
    Trident Plant & Quarry · 2400014

    103 (g) Written Notification Hazard Complaint Inspectio · 3.5 on-site hours

  17. violation5056354
    Trident Plant & Quarry · 2400014

    56.12016 · S&S · $1,550.00 proposed

  18. inspection6948589
    Trident Plant & Quarry · 2400014

    Verbal Hazard Complaint Inspections · 7.8 on-site hours

  19. inspection6948590
    Trident Plant & Quarry · 2400014

    Spot Inspection · 0.3 on-site hours

  20. violation5056352
    Trident Plant & Quarry · 2400014

    56.14112(b) · S&S · $818.00 proposed

  21. accident220253170624
    Trident Plant & Quarry · 2400014

    HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    The Employee was caring an electric winch onto the Raw Mill to help with the Discharge grate job. While descending the steps to the mill The Employee trip and fell on top of the mill with the winch in hand. They injured their left ankle during the fall.

  22. violation5055919
    Trident Plant & Quarry · 2400014

    56.12002 · $432.00 proposed

  23. violation5055918
    Trident Plant & Quarry · 2400014

    56.12002 · $151.00 proposed

  24. violation5050360
    Trident Plant & Quarry · 2400014

    56.11001 · $151.00 proposed

  25. violation5050359
    Trident Plant & Quarry · 2400014

    56.12004 · $151.00 proposed

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.