ACTIVE / OPERATOR PORTFOLIO

Ferroglobe USA Quartz, Inc.

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

MSHA OPERATOR ID0061503

MINE PORTFOLIO

2 of 2 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
Marlboro Mine3800768 · Active6/8 quarters reportedMarlboro, SCSurface · MSHA: Quartz, Crystal079,94014040.5
Meadows0103517 · Active6/8 quarters reportedLowndes, ALSurface · MSHA: Construction Sand and Gravel0116,44417147.0

LOCATION

Portfolio map

2 of 2 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

31

6 significant & substantial (S&S)

  1. 2025 Q17
  2. 2025 Q20
  3. 2025 Q32
  4. 2025 Q40
  5. 2026 Q16
  6. 2026 Q213
  7. 2026 Q33
  8. 2026 Q4 *0

Accident records

1

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q21
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

17,119.00

31 of 31 violations with amounts

  1. 2025 Q11,236
  2. 2025 Q2—
  3. 2025 Q3344
  4. 2025 Q4—
  5. 2026 Q11,220
  6. 2026 Q27,988
  7. 2026 Q36,331
  8. 2026 Q4 *—

On-site inspection hours

87.50

16 inspections · 16 with hours

  1. 2025 Q123.00
  2. 2025 Q21.50
  3. 2025 Q318.50
  4. 2025 Q4—
  5. 2026 Q119.00
  6. 2026 Q218.50
  7. 2026 Q37.00
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q1721,236.0000423.0
2025-Q200—1011.5
2025-Q321344.0000218.5
2025-Q400—000—
2026-Q1601,220.0000319.0
2026-Q21317,988.0000518.5
2026-Q3326,331.000017.0
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF043225
    Meadows · 0103517

    Regular Safety and Health Inspection · 7.0 on-site hours

  2. violation5065603
    Meadows · 0103517

    50.30(a) · $151.00 proposed

  3. violation5065602
    Meadows · 0103517

    56.20003(a) · S&S · $1,431.00 proposed

  4. violation5065601
    Meadows · 0103517

    56.14132(a) · S&S · $4,749.00 proposed

  5. inspectionF0444F0
    Marlboro Mine · 3800768

    103 (g) Written Notification Hazard Complaint Inspectio · 3.8 on-site hours

  6. inspectionF0444EB
    Marlboro Mine · 3800768

    Compliance Follow-up Inspection · 1.3 on-site hours

  7. violation5193051
    Marlboro Mine · 3800768

    56.16005 · $267.00 proposed

  8. violation5193044
    Marlboro Mine · 3800768

    56.18002(b) · $151.00 proposed

  9. violation5193043
    Marlboro Mine · 3800768

    56.14132(a) · $883.00 proposed

  10. violation5193042
    Marlboro Mine · 3800768

    56.14100(b) · $883.00 proposed

  11. violation5193041
    Marlboro Mine · 3800768

    56.14101(a)(2) · $883.00 proposed

  12. violation5193040
    Marlboro Mine · 3800768

    56.14132(b)(1)(i) · $883.00 proposed

  13. violation5193039
    Marlboro Mine · 3800768

    56.14100(b) · $267.00 proposed

  14. inspectionF0444E8
    Marlboro Mine · 3800768

    103 (g) Written Notification Hazard Complaint Inspectio · 1.0 on-site hours

  15. inspectionF0444E9
    Marlboro Mine · 3800768

    Regular Safety and Health Inspection · 4.8 on-site hours

  16. inspectionF0444E7
    Marlboro Mine · 3800768

    Verbal Hazard Complaint Inspections · 7.8 on-site hours

  17. violation5193038
    Marlboro Mine · 3800768

    46.7(a) · $267.00 proposed

  18. violation5193037
    Marlboro Mine · 3800768

    56.4402 · $151.00 proposed

  19. violation5193036
    Marlboro Mine · 3800768

    56.4201(a)(2) · $267.00 proposed

  20. violation5193035
    Marlboro Mine · 3800768

    56.14100(a) · $883.00 proposed

  21. violation5193034
    Marlboro Mine · 3800768

    56.14100(b) · $883.00 proposed

  22. violation5193033
    Marlboro Mine · 3800768

    56.15004 · S&S · $1,320.00 proposed

  23. inspectionF0324F8
    Marlboro Mine · 3800768

    Regular Safety and Health Inspection · 8.5 on-site hours

  24. violation5063673
    Marlboro Mine · 3800768

    50.30(a) · $151.00 proposed

  25. inspectionF03182E
    Meadows · 0103517

    Compliance Follow-up Inspection · 3.5 on-site hours

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.