ALL STATUSES / OPERATOR PORTFOLIO

Michaelson Inc

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

MSHA OPERATOR ID0051548

MINE PORTFOLIO

3 of 3 mines and facilities

2025-01-01 – 2026-10-13. All statuses records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
271 Plant1302462 · Intermittent6/8 quarters reportedEmmet, IASurface · MSHA: Construction Sand and Gravel0300003.0
Commander Plant1302276 · Intermittent6/8 quarters reportedEmmet, IASurface · MSHA: Construction Sand and Gravel05914012.0
Tesab #623 Crusher1302277 · AbandonedEmmet, IASurface · MSHA: Construction Sand and Gravel——00—

LOCATION

Portfolio map

2 of 3 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

4

0 significant & substantial (S&S)

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q31
  4. 2025 Q40
  5. 2026 Q13
  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

604.00

4 of 4 violations with amounts

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

On-site inspection hours

15.00

5 inspections · 5 with hours

  1. 2025 Q1—
  2. 2025 Q2—
  3. 2025 Q35.75
  4. 2025 Q4—
  5. 2026 Q17.00
  6. 2026 Q2—
  7. 2026 Q32.25
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q100—000—
2025-Q200—000—
2025-Q310151.000025.8
2025-Q400—000—
2026-Q130453.000027.0
2026-Q200—000—
2026-Q300—0012.3
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF02FF45
    271 Plant · 1302462

    Mine Idle Activity · 2.3 on-site hours

  2. inspectionF0370A3
    Commander Plant · 1302276

    Compliance Follow-up Inspection · 2.5 on-site hours

  3. inspectionF036DDF
    Commander Plant · 1302276

    Regular Safety and Health Inspection · 4.5 on-site hours

  4. violation5113745
    Commander Plant · 1302276

    50.30(a) · $151.00 proposed

  5. violation5113744
    Commander Plant · 1302276

    56.14107(a) · $151.00 proposed

  6. violation5113743
    Commander Plant · 1302276

    56.12004 · $151.00 proposed

  7. inspectionF016E41
    Commander Plant · 1302276

    Regular Safety and Health Inspection · 5.0 on-site hours

  8. inspectionF016E42
    271 Plant · 1302462

    Mine Idle Activity · 0.8 on-site hours

  9. violation9699949
    Commander Plant · 1302276

    56.14108 · $151.00 proposed

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.