ALL STATUSES / OPERATOR PORTFOLIO

Imerys Refractory Minerals USA Inc.

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

MSHA OPERATOR ID0171753

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
Barbour County Mines0101565 · ActiveBarbour, ALSurface · MSHA: Clay, Ceramic, Refractory Mnls.——0011.8
MACON COUNTY MINES0900340 · ActiveMacon, GASurface · MSHA: Common Clays NEC——2038.0
MULCOA PLANT #10900339 · ActiveSumter, GAFacility · MSHA: Common Clays NEC——4165.3
MULCOA PLANT NO 20900188 · ActiveSumter, GAFacility · MSHA: Common Clays NEC——280202.3

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

34

3 significant & substantial (S&S)

  1. 2025 Q16
  2. 2025 Q20
  3. 2025 Q312
  4. 2025 Q40
  5. 2026 Q111
  6. 2026 Q21
  7. 2026 Q34
  8. 2026 Q4 *0

Accident records

1

0 records classified as fatality

  1. 2025 Q11
  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

15,162.00

34 of 34 violations with amounts

  1. 2025 Q11,304
  2. 2025 Q2—
  3. 2025 Q31,812
  4. 2025 Q4—
  5. 2026 Q110,977
  6. 2026 Q2151
  7. 2026 Q3918
  8. 2026 Q4 *—

On-site inspection hours

317.25

19 inspections · 19 with hours

  1. 2025 Q173.50
  2. 2025 Q24.00
  3. 2025 Q376.25
  4. 2025 Q4—
  5. 2026 Q195.75
  6. 2026 Q249.75
  7. 2026 Q318.00
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q1611,304.0010473.5
2025-Q200—0014.0
2025-Q31201,812.0000376.3
2025-Q400—000—
2026-Q111210,977.0000495.8
2026-Q210151.0000449.8
2026-Q340918.0000318.0
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF03A8B5
    MULCOA PLANT NO 2 · 0900188

    Compliance Follow-up Inspection · 4.0 on-site hours

  2. inspectionF03A8B1
    MULCOA PLANT NO 2 · 0900188

    Spot Inspection · 6.0 on-site hours

  3. inspectionF03A8B0
    MULCOA PLANT NO 2 · 0900188

    Verbal Hazard Complaint Inspections · 8.0 on-site hours

  4. violation5069906
    MULCOA PLANT NO 2 · 0900188

    56.14107(a) · $151.00 proposed

  5. violation5069905
    MULCOA PLANT NO 2 · 0900188

    56.14205 · $151.00 proposed

  6. violation5069904
    MULCOA PLANT NO 2 · 0900188

    56.12032 · $465.00 proposed

  7. violation5069903
    MULCOA PLANT NO 2 · 0900188

    56.4102 · $151.00 proposed

  8. inspectionF047883
    Barbour County Mines · 0101565

    Regular Safety and Health Inspection · 3.3 on-site hours

  9. inspectionF027770
    MULCOA PLANT #1 · 0900339

    Regular Safety and Health Inspection · 0.0 on-site hours

  10. inspectionF02776F
    MACON COUNTY MINES · 0900340

    Regular Safety and Health Inspection · 12.0 on-site hours

  11. violation9758200
    MULCOA PLANT NO 2 · 0900188

    56.14116(a) · $151.00 proposed

  12. inspectionF027771
    MULCOA PLANT NO 2 · 0900188

    Regular Safety and Health Inspection · 34.5 on-site hours

  13. inspectionF02D978
    Barbour County Mines · 0101565

    Regular Safety and Health Inspection · 4.5 on-site hours

  14. violation9709118
    MULCOA PLANT NO 2 · 0900188

    56.11001 · $151.00 proposed

  15. violation9758191
    MULCOA PLANT NO 2 · 0900188

    56.18002(a) · S&S · $4,871.00 proposed

  16. violation9758190
    MULCOA PLANT NO 2 · 0900188

    56.11001 · S&S · $4,047.00 proposed

  17. violation9758189
    MULCOA PLANT NO 2 · 0900188

    56.14112(b) · $245.00 proposed

  18. violation9758188
    MULCOA PLANT NO 2 · 0900188

    56.14112(a)(1) · $245.00 proposed

  19. violation9758187
    MULCOA PLANT NO 2 · 0900188

    56.14107(a) · $313.00 proposed

  20. violation9758186
    MULCOA PLANT NO 2 · 0900188

    56.18002(a) · $313.00 proposed

  21. violation9758185
    MULCOA PLANT NO 2 · 0900188

    56.14112(a)(1) · $245.00 proposed

  22. violation9758184
    MULCOA PLANT NO 2 · 0900188

    56.14107(a) · $245.00 proposed

  23. inspectionF027763
    MULCOA PLANT NO 2 · 0900188

    Regular Safety and Health Inspection · 60.0 on-site hours

  24. violation9758179
    MULCOA PLANT #1 · 0900339

    56.12032 · $151.00 proposed

  25. inspectionF027760
    MULCOA PLANT #1 · 0900339

    Regular Safety and Health Inspection · 18.8 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.