ALL STATUSES / 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

40 of 40 mines and facilities

2025-01-01 – 2026-10-18. All statuses records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
PLANT #11302090 · Active6/8 quarters reportedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC048,3593033.0
PLANT #21302091 · Active6/8 quarters reportedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC053,7582028.0
PLANT #31302092 · Active6/8 quarters reportedPottawattamie, IASurface · MSHA: Crushed, Broken Limestone NEC070,47410154.8
Plant #81302178 · Active6/8 quarters reportedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC038,4163045.8
Plant #91302216 · Active6/8 quarters reportedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC055,2809050.0
Stripping #11302411 · Intermittent4/8 quarters reportedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC016,121008.0
Stripping #31302196 · Active6/8 quarters reportedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC022,0915133.5
Stripping #41302244 · Active6/8 quarters reportedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC075,3622126.5
Stripping #51302245 · Active6/8 quarters reportedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC056,2100137.3
Stripping #81302487 · Active5/8 quarters reportedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC031,0242035.5
92 Quarry1300211 · AbandonedMadison, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
ATLANTIC MINE OF ATLANTIC, IA1302228 · AbandonedAdair, IAUnderground · MSHA: Crushed, Broken Limestone NEC——00—
Atlantic Quarry And Mill1300209 · AbandonedCass, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Atlantic Shop1302438 · AbandonedCass, IAFacility · MSHA: Crushed, Broken Limestone NEC——00—
Corning Quarry1300208 · AbandonedAdams, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Crescent Quarry1300212 · AbandonedPottawattamie, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Crisler Quarry1300860 · AbandonedPottawattamie, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Crusher #71302256 · AbandonedPottawattamie, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Howe Quarry1300204 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Jefferson Quarry And Mill1300205 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
K And S Quarry1300213 · AbandonedPottawattamie, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Lewis Quarry & Mill1301693 · AbandonedCass, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
LOGAN QUARRY1302195 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Menlo Quarry1300206 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Mt Etna Qy1300207 · AbandonedAdams, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Plant #22301951 · AbandonedNodaway, MOSurface · MSHA: Crushed, Broken Limestone NEC——00—
PLANT #41302093 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
PLANT #51302087 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
PLANT #61302088 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
PLANT #71302086 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Rip Rap #11302379 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Rip Rap #21302380 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Rip Rap #31302410 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Schildberg Shops1302206 · AbandonedAdair, IAFacility · MSHA: Crushed, Broken Limestone NEC——00—
Silver City Quarry1300214 · AbandonedPottawattamie, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Stripping1302094 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
STRIPPING #21302089 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Stripping #71302364 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Thayer Quarry1300215 · AbandonedUnion, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Wash Plant #11302416 · AbandonedAdair, IASurface · MSHA: Crushed, Broken Limestone NEC——00—

LOCATION

Portfolio map

20 of 40 mines with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-18Applies 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

352.25

41 inspections · 41 with hours

  1. 2025 Q178.75
  2. 2025 Q268.25
  3. 2025 Q328.25
  4. 2025 Q461.75
  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-Q21001,510.00001068.3
2025-Q310151.0030328.3
2025-Q411209.0000761.8
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. violation5114624
    Stripping #3 · 1302196

    56.12004 · $151.00 proposed

  2. violation5114623
    Stripping #3 · 1302196

    56.12004 · $151.00 proposed

  3. violation5114622
    Stripping #3 · 1302196

    56.12004 · S&S · $592.00 proposed

  4. inspectionF02AF8B
    Stripping #3 · 1302196

    Regular Safety and Health Inspection · 9.8 on-site hours

  5. accident220260420026
    Stripping #5 · 1302245

    POWERED HAULAGE · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Backing over a berm while dumping

  6. violation5114223
    PLANT #3 · 1302092

    56.14130(g) · $151.00 proposed

  7. violation5114222
    PLANT #3 · 1302092

    56.14131(a) · $151.00 proposed

  8. violation5114221
    PLANT #3 · 1302092

    56.14131(a) · $151.00 proposed

  9. inspectionF028AA0
    PLANT #3 · 1302092

    Regular Safety and Health Inspection · 18.3 on-site hours

  10. inspectionF028A9F
    Plant #9 · 1302216

    Compliance Follow-up Inspection · 1.5 on-site hours

  11. violation5114220
    Plant #9 · 1302216

    56.14100(c) · $151.00 proposed

  12. inspectionF028A9E
    Plant #9 · 1302216

    Regular Safety and Health Inspection · 9.8 on-site hours

  13. inspectionF028A9D
    Stripping #4 · 1302244

    Regular Safety and Health Inspection · 7.0 on-site hours

  14. inspectionF028A9C
    Stripping #5 · 1302245

    Regular Safety and Health Inspection · 4.0 on-site hours

  15. inspectionF028A9B
    Stripping #8 · 1302487

    Regular Safety and Health Inspection · 7.5 on-site hours

  16. inspectionF028A9A
    Plant #8 · 1302178

    Regular Safety and Health Inspection · 17.0 on-site hours

  17. violation5113494
    PLANT #1 · 1302090

    56.20003(b) · S&S · $209.00 proposed

  18. inspectionF0231DF
    PLANT #1 · 1302090

    Regular Safety and Health Inspection · 10.8 on-site hours

  19. inspectionF028A96
    Stripping #1 · 1302411

    Regular Safety and Health Inspection · 5.0 on-site hours

  20. inspectionF028A95
    PLANT #2 · 1302091

    Regular Safety and Health Inspection · 10.5 on-site hours

  21. inspectionF028A89
    Stripping #3 · 1302196

    Spot Inspection · 10.0 on-site hours

  22. inspectionF028A88
    PLANT #1 · 1302090

    Regular Safety and Health Inspection · 11.8 on-site hours

  23. violation5114207
    PLANT #1 · 1302090

    56.12004 · $151.00 proposed

  24. accident220252340008
    PLANT #3 · 1302092

    HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Hand was caught between pry bar and motor

  25. accident220252160017
    Stripping #3 · 1302196

    STEPPING OR KNEELING ON OBJECT · DYS AWY FRM WRK & RESTRCTD ACT

    Accident narrative

    Getting out of work truck and stepped on a rock, twisting leg

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.

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

2 linked operators.

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