ACTIVE / CONTROLLER PORTFOLIO

Mark Schildberg

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

MSHA CONTROLLER IDM00097

MINE PORTFOLIO

9 of 9 mines and facilities

2025-01-01 – 2026-10-17. Active records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
PLANT #11302090 · ActiveAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——3033.0
PLANT #21302091 · ActiveAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——2028.0
PLANT #31302092 · ActivePottawattamie, IASurface · MSHA: Crushed, Broken Limestone NEC——10154.8
Plant #81302178 · ActiveAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——3045.8
Plant #91302216 · ActiveAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——9050.0
Stripping #31302196 · ActiveAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——5133.5
Stripping #41302244 · ActiveAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——2126.5
Stripping #51302245 · ActiveAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——0137.3
Stripping #81302487 · ActiveAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——2035.5

LOCATION

Portfolio map

9 of 9 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

36

6 significant & substantial (S&S)

  1. 2025 Q12
  2. 2025 Q210
  3. 2025 Q31
  4. 2025 Q41
  5. 2026 Q18
  6. 2026 Q210
  7. 2026 Q34
  8. 2026 Q4 *0

Accident records

4

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q33
  4. 2025 Q40
  5. 2026 Q11
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

9,740.00

36 of 36 violations with amounts

  1. 2025 Q1302
  2. 2025 Q21,510
  3. 2025 Q3151
  4. 2025 Q4209
  5. 2026 Q11,675
  6. 2026 Q25,289
  7. 2026 Q3604
  8. 2026 Q4 *—

On-site inspection hours

344.25

39 inspections · 39 with hours

  1. 2025 Q178.75
  2. 2025 Q265.25
  3. 2025 Q328.25
  4. 2025 Q456.75
  5. 2026 Q139.25
  6. 2026 Q259.50
  7. 2026 Q316.50
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q120302.0000778.8
2025-Q21001,510.0000965.3
2025-Q310151.0030328.3
2025-Q411209.0000656.8
2026-Q1821,675.0010439.3
2026-Q21035,289.0000859.5
2026-Q340604.0000216.5
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF028E96
    Stripping #4 · 1302244

    Regular Safety and Health Inspection · 6.5 on-site hours

  2. inspectionF016E3A
    PLANT #3 · 1302092

    Regular Safety and Health Inspection · 10.3 on-site hours

  3. violation9699939
    PLANT #3 · 1302092

    56.14132(a) · $151.00 proposed

  4. violation9699938
    PLANT #3 · 1302092

    56.14100(c) · $151.00 proposed

  5. violation9699937
    PLANT #3 · 1302092

    56.14100(c) · $151.00 proposed

  6. inspectionF02FADA
    Plant #8 · 1302178

    Regular Safety and Health Inspection · 10.5 on-site hours

  7. violation5114010
    Plant #8 · 1302178

    56.14107(a) · $151.00 proposed

  8. violation5114009
    Plant #8 · 1302178

    47.44(b) · $151.00 proposed

  9. violation5114008
    Plant #8 · 1302178

    56.14116(a) · $151.00 proposed

  10. inspectionF02FAD8
    Stripping #3 · 1302196

    Compliance Follow-up Inspection · 1.0 on-site hours

  11. inspectionF02FAD9
    Stripping #5 · 1302245

    Regular Safety and Health Inspection · 8.0 on-site hours

  12. inspectionF02FAD7
    Stripping #3 · 1302196

    Regular Safety and Health Inspection · 10.3 on-site hours

  13. violation5114007
    Stripping #3 · 1302196

    56.12008 · $151.00 proposed

  14. violation5114006
    Plant #9 · 1302216

    56.14101(a)(2) · $151.00 proposed

  15. violation5114005
    Plant #9 · 1302216

    56.14100(c) · $151.00 proposed

  16. inspectionF02FAD6
    Plant #9 · 1302216

    Regular Safety and Health Inspection · 12.8 on-site hours

  17. inspectionF016E29
    Stripping #8 · 1302487

    Regular Safety and Health Inspection · 4.5 on-site hours

  18. violation9699887
    PLANT #2 · 1302091

    56.14205 · $151.00 proposed

  19. inspectionF016E28
    PLANT #1 · 1302090

    Mine Idle Activity · 0.8 on-site hours

  20. inspectionF016E27
    PLANT #2 · 1302091

    Regular Safety and Health Inspection · 7.3 on-site hours

  21. inspectionF0116B4
    Stripping #4 · 1302244

    Regular Safety and Health Inspection · 3.5 on-site hours

  22. inspectionF0116B3
    Plant #8 · 1302178

    Regular Safety and Health Inspection · 14.3 on-site hours

  23. inspectionF0116B2
    Plant #9 · 1302216

    Regular Safety and Health Inspection · 11.0 on-site hours

  24. violation9699863
    Plant #9 · 1302216

    56.4130(b) · $151.00 proposed

  25. inspectionF0116B1
    Stripping #8 · 1302487

    Regular Safety and Health Inspection · 16.5 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 operator.

Relationships reflect the selected mine status and current MSHA controller/operator fields.