ALL STATUSES / OPERATOR PORTFOLIO

Simpson Timber Company

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

MSHA OPERATOR IDL00192

MINE PORTFOLIO

20 of 20 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
1250 Road Quarry4501771 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
3358 Pit4501776 · AbandonedMason, WASurface · MSHA: Construction Sand and Gravel——00—
600 Road Quarry4501775 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
620 Road Quarry4501774 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
806 Road Quarry4501772 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
831 Road Quarry4501773 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
Army Quarry4501777 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
Dayton Peak Quarry4501788 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
Franklin Pit4501786 · AbandonedMason, WASurface · MSHA: Construction Sand and Gravel——00—
Institution Pit4501785 · AbandonedMason, WASurface · MSHA: Construction Sand and Gravel——00—
Kamilche Quarry4501783 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
Kuhnle Pit4501798 · AbandonedMason, WASurface · MSHA: Construction Sand and Gravel——00—
Liboki Pit4501784 · AbandonedMason, WASurface · MSHA: Construction Sand and Gravel——00—
Lynch Road Gravel Pit4501779 · AbandonedMason, WASurface · MSHA: Construction Sand and Gravel——00—
Micro-Wave Quarry4501782 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
Panhandle Lake Quarry4502461 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
Ping Pong Pit4501795 · AbandonedMason, WASurface · MSHA: Construction Sand and Gravel——00—
Power Line Quarry4501778 · AbandonedMason, WASurface · MSHA: Crushed, Broken Traprock——00—
Schafer Pit4501794 · AbandonedMason, WASurface · MSHA: Construction Sand and Gravel——00—
SIMPSON4501800 · AbandonedMason, WASurface · MSHA: Construction Sand and Gravel——00—

LOCATION

Portfolio map

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

2025-01-01 – 2026-10-13Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

0

0 significant & substantial (S&S)

  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

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

—

0 of 0 violations with amounts

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

On-site inspection hours

—

0 inspections · 0 with hours

  1. 2025 Q1—
  2. 2025 Q2—
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q100—000—
2025-Q200—000—
2025-Q300—000—
2025-Q400—000—
2026-Q100—000—
2026-Q200—000—
2026-Q300—000—
2026-Q4 *00—000—

Most cited CFR sections

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

SectionViolationsS&S

No violation records in this period.

Safety activity

    No matching records in this period.

    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.