ALL STATUSES / OPERATOR PORTFOLIO

Kartechner Brothers LLC

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

MSHA OPERATOR ID0183093

MINE PORTFOLIO

3 of 3 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
Hazemag Impactor4703934 · IntermittentFond Du Lac, WISurface · MSHA: Crushed, Broken Stone NEC——4010.5
KPI - JCI Plant4703922 · IntermittentFond Du Lac, WISurface · MSHA: Construction Sand and Gravel——0014.5
Pioneer 2854 Portable Jaw Crusher4703935 · IntermittentFond Du Lac, WISurface · MSHA: Crushed, Broken Stone NEC——3018.8

LOCATION

Portfolio map

3 of 3 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

7

1 significant & substantial (S&S)

  1. 2025 Q13
  2. 2025 Q20
  3. 2025 Q31
  4. 2025 Q43
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q30
  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

1,057.00

7 of 7 violations with amounts

  1. 2025 Q1453
  2. 2025 Q2—
  3. 2025 Q3151
  4. 2025 Q4453
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

43.75

8 inspections · 8 with hours

  1. 2025 Q19.50
  2. 2025 Q2—
  3. 2025 Q37.50
  4. 2025 Q421.50
  5. 2026 Q1—
  6. 2026 Q25.25
  7. 2026 Q3—
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q130453.000019.5
2025-Q200—000—
2025-Q310151.000027.5
2025-Q431453.0000421.5
2026-Q100—000—
2026-Q200—0015.3
2026-Q300—000—
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF02A5E1
    KPI - JCI Plant · 4703922

    Verbal Hazard Complaint Inspections · 5.3 on-site hours

  2. inspectionF02A5C4
    Pioneer 2854 Portable Jaw Crusher · 4703935

    Regular Safety and Health Inspection · 8.0 on-site hours

  3. inspectionF02A5C3
    Pioneer 2854 Portable Jaw Crusher · 4703935

    Spot Inspection · 1.3 on-site hours

  4. inspectionF02A5C0
    KPI - JCI Plant · 4703922

    Regular Safety and Health Inspection · 5.8 on-site hours

  5. violation6154992
    Hazemag Impactor · 4703934

    56.14205 · S&S · $151.00 proposed

  6. violation6154991
    Hazemag Impactor · 4703934

    56.20003(a) · $151.00 proposed

  7. violation6154990
    Hazemag Impactor · 4703934

    56.14107(a) · $151.00 proposed

  8. inspectionF02A5BF
    Hazemag Impactor · 4703934

    Regular Safety and Health Inspection · 6.5 on-site hours

  9. inspectionF024318
    Hazemag Impactor · 4703934

    Regular Safety and Health Inspection · 4.0 on-site hours

  10. violation8821771
    Hazemag Impactor · 4703934

    56.14107(a) · $151.00 proposed

  11. inspectionF01662A
    KPI - JCI Plant · 4703922

    Regular Safety and Health Inspection · 3.5 on-site hours

  12. violation9695771
    Pioneer 2854 Portable Jaw Crusher · 4703935

    56.12025 · $151.00 proposed

  13. violation9695770
    Pioneer 2854 Portable Jaw Crusher · 4703935

    56.4101 · $151.00 proposed

  14. violation9695769
    Pioneer 2854 Portable Jaw Crusher · 4703935

    56.14100(c) · $151.00 proposed

  15. inspectionF0165FF
    Pioneer 2854 Portable Jaw Crusher · 4703935

    Regular Safety and Health Inspection · 9.5 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.