ALL STATUSES / OPERATOR PORTFOLIO

Knife River Materials

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

MSHA OPERATOR ID0052886

MINE PORTFOLIO

8 of 8 mines and facilities

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

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Elk River Wash Plant3503404 · IntermittentCurry, ORSurface · MSHA: Construction Sand and Gravel——3018.3
Mobile Crusher #13502906 · IntermittentDouglas, ORSurface · MSHA: Crushed, Broken Stone NEC——2022.0
Mobile Crusher #43503590 · ActiveCoos, ORSurface · MSHA: Construction Sand and Gravel——009.5
MURPHY CREEK3502875 · ActiveJosephine, ORSurface · MSHA: Crushed, Broken Stone NEC——4010.0
Broadbent Wash Plant3503389 · AbandonedCoos, ORSurface · MSHA: Construction Sand and Gravel——00—
Mobile Crusher #23503505 · AbandonedCoos, ORSurface · MSHA: Crushed, Broken Stone NEC——00—
Mobile Crusher # 33500555 · AbandonedCoos, ORSurface · MSHA: Construction Sand and Gravel——00—
TEECO PORTABLE CRUSHER3503310 · AbandonedDouglas, ORSurface · MSHA: Crushed, Broken Traprock——00—

LOCATION

Portfolio map

6 of 8 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

9

1 significant & substantial (S&S)

  1. 2025 Q12
  2. 2025 Q21
  3. 2025 Q30
  4. 2025 Q41
  5. 2026 Q11
  6. 2026 Q22
  7. 2026 Q32
  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

1,489.00

9 of 9 violations with amounts

  1. 2025 Q1418
  2. 2025 Q2165
  3. 2025 Q3—
  4. 2025 Q4151
  5. 2026 Q1151
  6. 2026 Q2302
  7. 2026 Q3302
  8. 2026 Q4 *—

On-site inspection hours

59.75

11 inspections · 11 with hours

  1. 2025 Q110.50
  2. 2025 Q28.00
  3. 2025 Q310.00
  4. 2025 Q42.00
  5. 2026 Q112.75
  6. 2026 Q211.50
  7. 2026 Q35.00
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q121418.0000210.5
2025-Q210165.000028.0
2025-Q300—00210.0
2025-Q410151.000012.0
2026-Q110151.0000112.8
2026-Q220302.0000211.5
2026-Q320302.000015.0
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. violation5160629
    MURPHY CREEK · 3502875

    41.11 · $151.00 proposed

  2. inspectionF042987
    MURPHY CREEK · 3502875

    Regular Safety and Health Inspection · 5.0 on-site hours

  3. violation5160630
    MURPHY CREEK · 3502875

    50.30(a) · $151.00 proposed

  4. violation5160392
    Mobile Crusher #1 · 3502906

    56.12008 · $151.00 proposed

  5. violation5160391
    Mobile Crusher #1 · 3502906

    56.12032 · $151.00 proposed

  6. inspectionF042979
    Mobile Crusher #1 · 3502906

    Regular Safety and Health Inspection · 7.0 on-site hours

  7. inspectionF042972
    Mobile Crusher #4 · 3503590

    Regular Safety and Health Inspection · 4.5 on-site hours

  8. violation5160335
    Elk River Wash Plant · 3503404

    56.14112(b) · $151.00 proposed

  9. inspectionF036E3B
    Elk River Wash Plant · 3503404

    Regular Safety and Health Inspection · 12.8 on-site hours

  10. inspectionF025555
    MURPHY CREEK · 3502875

    Regular Safety and Health Inspection · 2.0 on-site hours

  11. violation5100281
    MURPHY CREEK · 3502875

    56.14100(b) · $151.00 proposed

  12. inspectionF02A859
    Mobile Crusher #1 · 3502906

    Spot Inspection · 9.8 on-site hours

  13. inspectionF025537
    Mobile Crusher #1 · 3502906

    Special Emphasis Programs · 0.3 on-site hours

  14. inspectionF01665F
    Mobile Crusher #1 · 3502906

    Regular Safety and Health Inspection · 5.0 on-site hours

  15. inspectionF016653
    MURPHY CREEK · 3502875

    Regular Safety and Health Inspection · 3.0 on-site hours

  16. violation9990695
    MURPHY CREEK · 3502875

    56.14207 · $165.00 proposed

  17. inspectionF016643
    Elk River Wash Plant · 3503404

    Regular Safety and Health Inspection · 5.5 on-site hours

  18. violation9990656
    Elk River Wash Plant · 3503404

    56.14207 · $151.00 proposed

  19. violation9990655
    Elk River Wash Plant · 3503404

    56.15004 · S&S · $267.00 proposed

  20. inspectionF01663B
    Mobile Crusher #4 · 3503590

    Regular Safety and Health Inspection · 5.0 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 controller.

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