ACTIVE / OPERATOR PORTFOLIO

Interwest Construction Inc.

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

MSHA OPERATOR ID0143434

MINE PORTFOLIO

2 of 2 mines and facilities

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

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Elwha Gravel Pit4503770 · Active6/8 quarters reportedSkagit, WASurface · MSHA: Construction Sand and Gravel010,19718044.0
Old Smokey Pit4503074 · Active6/8 quarters reportedClallam, WASurface · MSHA: Crushed, Broken Stone NEC04,2424018.8

LOCATION

Portfolio map

2 of 2 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

22

4 significant & substantial (S&S)

  1. 2025 Q12
  2. 2025 Q22
  3. 2025 Q31
  4. 2025 Q40
  5. 2026 Q12
  6. 2026 Q25
  7. 2026 Q31
  8. 2026 Q4 *9

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

1,812.00

12 of 22 violations with amounts

  1. 2025 Q1302
  2. 2025 Q2302
  3. 2025 Q3151
  4. 2025 Q4—
  5. 2026 Q1302
  6. 2026 Q2755
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

62.75

10 inspections · 10 with hours

  1. 2025 Q19.75
  2. 2025 Q20.75
  3. 2025 Q39.75
  4. 2025 Q4—
  5. 2026 Q16.50
  6. 2026 Q216.00
  7. 2026 Q34.25
  8. 2026 Q4 *15.75
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q121302.000029.8
2025-Q220302.000010.8
2025-Q310151.000019.8
2025-Q400—000—
2026-Q120302.000016.5
2026-Q251755.0000216.0
2026-Q310—0024.3
2026-Q4 *92—00115.8

Most cited CFR sections

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

Safety activity

  1. violation5107876
    Elwha Gravel Pit · 4503770

    56.4201(a)(1)

  2. violation5107875
    Elwha Gravel Pit · 4503770

    46.7(c) · S&S

  3. violation5107874
    Elwha Gravel Pit · 4503770

    56.12032

  4. violation5107873
    Elwha Gravel Pit · 4503770

    56.12008

  5. violation5107872
    Elwha Gravel Pit · 4503770

    56.12008

  6. violation5107871
    Elwha Gravel Pit · 4503770

    56.12032

  7. violation5107870
    Elwha Gravel Pit · 4503770

    56.20003(a)

  8. violation5107869
    Elwha Gravel Pit · 4503770

    56.12004

  9. violation5107868
    Elwha Gravel Pit · 4503770

    56.20003(a) · S&S

  10. inspectionF04986B
    Elwha Gravel Pit · 4503770

    Regular Safety and Health Inspection · 15.8 on-site hours

  11. inspectionF03A424
    Old Smokey Pit · 4503074

    Compliance Follow-up Inspection · 1.0 on-site hours

  12. violation5107686
    Old Smokey Pit · 4503074

    56.11027

  13. inspectionF03A41D
    Old Smokey Pit · 4503074

    Regular Safety and Health Inspection · 3.3 on-site hours

  14. inspectionF0394AD
    Elwha Gravel Pit · 4503770

    Compliance Follow-up Inspection · 2.5 on-site hours

  15. violation5107568
    Elwha Gravel Pit · 4503770

    47.44(b) · $151.00 proposed

  16. violation5107567
    Elwha Gravel Pit · 4503770

    56.14100(c) · $151.00 proposed

  17. violation5107566
    Elwha Gravel Pit · 4503770

    56.4101 · $151.00 proposed

  18. violation5107565
    Elwha Gravel Pit · 4503770

    56.4104(b) · $151.00 proposed

  19. violation5107564
    Elwha Gravel Pit · 4503770

    56.20003(a) · S&S · $151.00 proposed

  20. inspectionF0394AB
    Elwha Gravel Pit · 4503770

    Regular Safety and Health Inspection · 13.5 on-site hours

  21. violation5107481
    Elwha Gravel Pit · 4503770

    56.20011 · $151.00 proposed

  22. violation5107463
    Elwha Gravel Pit · 4503770

    56.12028 · $151.00 proposed

  23. inspectionF0257A8
    Elwha Gravel Pit · 4503770

    Regular Safety and Health Inspection · 6.5 on-site hours

  24. violation5107202
    Old Smokey Pit · 4503074

    62.120 · $151.00 proposed

  25. inspectionF01AB21
    Old Smokey Pit · 4503074

    Spot Inspection · 9.8 on-site hours

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.