ALL STATUSES / CONTROLLER PORTFOLIO

Knife River Corporation

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

MSHA CONTROLLER ID0176802

MINE PORTFOLIO

253 of 253 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
Scarmardo4105498 · ActiveBurleson, TXSurface · MSHA: Construction Sand and Gravel——3028.8
Screen #445352103502 · IntermittentBeltrami, MNSurface · MSHA: Construction Sand and Gravel——204.5
Screen Plant 445402103419 · IntermittentBeltrami, MNSurface · MSHA: Construction Sand and Gravel——107.0
Sioux Falls Quarry3900008 · ActiveMinnehaha, SDSurface · MSHA: Crushed, Broken Quartzite——23292.3
Skyhigh Pit4103931 · ActiveLimestone, TXSurface · MSHA: Crushed, Broken Limestone NEC——23187.0
Star Pit #14801383 · ActiveLaramie, WYSurface · MSHA: Construction Sand and Gravel——18052.5
Star Plant3200706 · IntermittentBarnes, NDSurface · MSHA: Construction Sand and Gravel——001.8
STAYTON ROCK PIT3500521 · ActiveLinn, ORSurface · MSHA: Construction Sand and Gravel——1011.0
Stripping Crew2103790 · IntermittentBenton, MNSurface · MSHA: Construction Sand and Gravel——008.0
Verdendrye Plant3200386 · IntermittentGrand Forks, NDSurface · MSHA: Construction Sand and Gravel——108.8
Waikapu Quarry5100171 · ActiveMaui, HISurface · MSHA: Crushed, Broken Stone NEC——9059.3
Waimea Quarry5100195 · ActiveHawaii, HISurface · MSHA: Crushed, Broken Stone NEC——3021.0
Warroad Plant2103288 · IntermittentLake Of The Woods, MNSurface · MSHA: Crushed, Broken Stone NEC——005.0
Wash Plant1002170 · ActiveBonneville, IDSurface · MSHA: Construction Sand and Gravel——1013.3
Wash Plant #13200776 · IntermittentBurleigh, NDSurface · MSHA: Construction Sand and Gravel——1018.3
Wash Plant 21002090 · IntermittentAda, IDSurface · MSHA: Construction Sand and Gravel——108.8
Wash Plant 31002161 · IntermittentAda, IDSurface · MSHA: Construction Sand and Gravel——0010.0
Wash Plant 454752103417 · IntermittentBeltrami, MNSurface · MSHA: Construction Sand and Gravel——209.0
Wash Screw #457082103642 · IntermittentBeltrami, MNSurface · MSHA: Construction Sand and Gravel——103.8
Wash Screw #457192103626 · IntermittentBeltrami, MNSurface · MSHA: Construction Sand and Gravel——109.8
WATERVIEW3503605 · ActiveColumbia, ORSurface · MSHA: Construction Sand and Gravel——5035.3
WILLAMETTE PORTABLE #13503321 · ActiveClatsop, ORSurface · MSHA: Crushed, Broken Traprock——2019.0
WILLAMETTE PORTABLE #33503642 · ActiveLinn, ORSurface · MSHA: Crushed, Broken Stone NEC——3032.5
1860 Pit4103858 · AbandonedMclennan, TXSurface · MSHA: Construction Sand and Gravel——00—
433012102492 · AbandonedStearns, MNSurface · MSHA: Construction Sand and Gravel——00—
433162103339 · AbandonedMorrison, MNSurface · MSHA: Crushed, Broken Granite——00—
433222103129 · AbandonedMorrison, MNSurface · MSHA: Construction Sand and Gravel——00—
434852103485 · AbandonedBenton, MNSurface · MSHA: Sand, Common——00—
434872102427 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
434902103140 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
434912100462 · AbandonedBenton, MNSurface · MSHA: Crushed, Broken Stone NEC——00—
434952103106 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
434982103280 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
435262103110 · AbandonedBeltrami, MNSurface · MSHA: Construction Sand and Gravel——00—
442502103335 · AbandonedMorrison, MNSurface · MSHA: Construction Sand and Gravel——00—
443872103330 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
444802102969 · AbandonedStearns, MNSurface · MSHA: Construction Sand and Gravel——00—
444812100596 · AbandonedStearns, MNSurface · MSHA: Construction Sand and Gravel——00—
444822103402 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
444832101619 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
449902103356 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
454002100503 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
454152103094 · AbandonedMille Lacs, MNSurface · MSHA: Construction Sand and Gravel——00—
454152103253 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
454172103134 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
454232103644 · AbandonedStearns, MNSurface · MSHA: Construction Sand and Gravel——00—
455032102996 · AbandonedMorrison, MNSurface · MSHA: Construction Sand and Gravel——00—
455052100587 · AbandonedStearns, MNSurface · MSHA: Construction Sand and Gravel——00—
45900/459512103093 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
459302103136 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
459302103588 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
459502102860 · AbandonedIsanti, MNSurface · MSHA: Construction Sand and Gravel——00—
459602103092 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
459702102640 · AbandonedMorrison, MNSurface · MSHA: Construction Sand and Gravel——00—
459922103347 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
5103652103867 · Temporarily IdledBenton, MNSurface · MSHA: Construction Sand and Gravel——206.3
5103682104005 · Temporarily IdledStearns, MNSurface · MSHA: Construction Sand and Gravel——002.5
5103722103408 · Temporarily IdledStearns, MNSurface · MSHA: Construction Sand and Gravel——00—
5173992103932 · AbandonedWright, MNSurface · MSHA: Construction Sand and Gravel——102.8
5602152103784 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
Albany Rock Products3500453 · AbandonedLinn, ORSurface · MSHA: Construction Sand and Gravel——00—
Angell Quarry3503465 · AbandonedMultnomah, ORSurface · MSHA: Crushed, Broken Stone NEC——00—
Barbers Point Mill5100056 · AbandonedHonolulu, HIFacility · MSHA: Crushed, Broken Limestone NEC——00—
Birchwood Loading Station5000689 · AbandonedAnchorage, AKSurface · MSHA: Construction Sand and Gravel——00—
Broadbent Wash Plant3503389 · AbandonedCoos, ORSurface · MSHA: Construction Sand and Gravel——00—
Burnett Pit4801800 · AbandonedLaramie, WYSurface · MSHA: Construction Sand and Gravel——00—
Busse Pit2102676 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
Casper Pit4800715 · Temporarily IdledNatrona, WYSurface · MSHA: Construction Sand and Gravel——00—
Casper Portable #14801529 · AbandonedConverse, WYSurface · MSHA: Construction Sand and Gravel——00—
Cherry Creek Pit3503332 · AbandonedKlamath, ORSurface · MSHA: Construction Sand and Gravel——00—
COFFEE LAKE POND3503022 · AbandonedWashington, ORSurface · MSHA: Crushed, Broken Traprock——103.0
Crusher #23200774 · AbandonedBurleigh, NDSurface · MSHA: Construction Sand and Gravel——00—
Crusher #24801363 · Temporarily IdledNatrona, WYSurface · MSHA: Crushed, Broken Stone NEC——00—
Crusher #3 (portable)3200778 · AbandonedBurleigh, NDSurface · MSHA: Construction Sand and Gravel——00—
Crusher #44801569 · Temporarily IdledNatrona, WYSurface · MSHA: Construction Sand and Gravel——005.3
Crusher #435192102908 · AbandonedBeltrami, MNSurface · MSHA: Construction Sand and Gravel——00—
Crusher #435242102773 · AbandonedBeltrami, MNSurface · MSHA: Construction Sand and Gravel——00—
Crusher #435262103871 · AbandonedBeltrami, MNSurface · MSHA: Construction Sand and Gravel——00—
DBRM Pit - South2400793 · AbandonedRavalli, MTSurface · MSHA: Construction Sand and Gravel——00—
DEER ISLAND PLANT3502885 · AbandonedColumbia, ORSurface · MSHA: Construction Sand and Gravel——00—
Doyle Pit0401704 · AbandonedLassen, CASurface · MSHA: Construction Sand and Gravel——00—
Eagle Pugmill2402144 · AbandonedMissoula, MTSurface · MSHA: Construction Sand and Gravel——00—
El-Jay2103062 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
Empire Quarry0404954 · AbandonedLos Angeles, CASurface · MSHA: Crushed, Broken Stone NEC——00—
Figgins Portable Plant2401939 · AbandonedGallatin, MTSurface · MSHA: Construction Sand and Gravel——00—
Herbst Pit2102506 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
Honey Lake0405345 · AbandonedLassen, CASurface · MSHA: Construction Sand and Gravel——00—
HUB CITY PIT3502823 · AbandonedLinn, ORSurface · MSHA: Construction Sand and Gravel——00—
James Pit2102739 · AbandonedMille Lacs, MNSurface · MSHA: Construction Sand and Gravel——00—
Jaw Plant5100161 · AbandonedHawaii, HISurface · MSHA: Construction Sand and Gravel——00—
JTL - PORTABLE NO 14801535 · AbandonedConverse, WYSurface · MSHA: Construction Sand and Gravel——00—
Kalama Quarry4503460 · AbandonedCowlitz, WASurface · MSHA: Crushed, Broken Stone NEC——00—
KALISPELL CRUSHER2401685 · AbandonedYellowstone, MTSurface · MSHA: Construction Sand and Gravel——00—
Killinger Pit2102426 · AbandonedBenton, MNSurface · MSHA: Construction Sand and Gravel——00—
Knife River - North West4503326 · AbandonedStevens, WASurface · MSHA: Crushed, Broken Stone NEC——00—
Knife River Portable Plant #11302152 · AbandonedWoodbury, IASurface · MSHA: Construction Sand and Gravel——00—
Lamonta3503648 · AbandonedCrook, ORSurface · MSHA: Crushed, Broken Stone NEC——003.3
METRO PORTABLE #53502382 · AbandonedClackamas, ORSurface · MSHA: Crushed, Broken Traprock——00—
Mexia Materials/Redland4103231 · AbandonedLimestone, TXSurface · MSHA: Crushed, Broken Stone NEC——00—
Mitchell Pit4104556 · AbandonedFalls, TXSurface · MSHA: Construction Sand and Gravel——00—

LOCATION

Portfolio map

195 of 253 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

349

58 significant & substantial (S&S)

  1. 2025 Q131
  2. 2025 Q296
  3. 2025 Q319
  4. 2025 Q440
  5. 2026 Q120
  6. 2026 Q273
  7. 2026 Q357
  8. 2026 Q4 *13

Accident records

43

0 records classified as fatality

  1. 2025 Q12
  2. 2025 Q22
  3. 2025 Q310
  4. 2025 Q44
  5. 2026 Q14
  6. 2026 Q29
  7. 2026 Q311
  8. 2026 Q4 *1

Proposed penalties · USD

115,966.00

311 of 349 violations with amounts

  1. 2025 Q114,177
  2. 2025 Q222,924
  3. 2025 Q32,886
  4. 2025 Q48,064
  5. 2026 Q120,257
  6. 2026 Q234,468
  7. 2026 Q313,190
  8. 2026 Q4 *—

On-site inspection hours

2,449.75

374 inspections · 374 with hours

  1. 2025 Q1197.50
  2. 2025 Q2520.50
  3. 2025 Q3283.50
  4. 2025 Q4301.50
  5. 2026 Q1296.00
  6. 2026 Q2455.25
  7. 2026 Q3364.75
  8. 2026 Q4 *30.75
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q131814,177.002037197.5
2025-Q2961422,924.002071520.5
2025-Q31912,886.0010046283.5
2025-Q44058,064.004041301.5
2026-Q120620,257.004035296.0
2026-Q273934,468.009064455.3
2026-Q357913,190.0011074364.8
2026-Q4 *136—10630.8

Most cited CFR sections

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

Safety activity

  1. inspectionF0504BA
    KEIZER PIT & PLANT · 3500503

    Regular Safety and Health Inspection · 0.0 on-site hours

  2. violation5160695
    KEIZER PIT & PLANT · 3500503

    56.12004

  3. violation5112292
    Sioux Falls Quarry · 3900008

    56.5001(a)/56.5005 · S&S

  4. violation5112291
    Sioux Falls Quarry · 3900008

    56.5001(a)/56.5005 · S&S

  5. violation5112290
    Sioux Falls Quarry · 3900008

    56.5001(a)/56.5005 · S&S

  6. inspectionF03B3FE
    Billings Pit · 2400478

    Regular Safety and Health Inspection · 4.5 on-site hours

  7. inspectionF03B3FD
    JTL Portable Crusher #3 · 2402414

    Regular Safety and Health Inspection · 4.5 on-site hours

  8. violation5033814
    Billings Pit · 2400478

    56.14107(a) · S&S

  9. accident220262810054
    Crusher #1 · 3200950

    OTHER · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Miner had an allergic reaction to a bee sting

  10. inspectionF04211F
    Wash Plant 2 · 1002090

    Regular Safety and Health Inspection · 4.0 on-site hours

  11. inspectionF04211E
    Wash Plant 3 · 1002161

    Regular Safety and Health Inspection · 4.5 on-site hours

  12. violation5212169
    Crusher #1 · 3200950

    56.11011 · S&S

  13. violation5212168
    Crusher #1 · 3200950

    50.20(a)

  14. violation5212167
    Crusher #1 · 3200950

    56.12004

  15. violation5212166
    Crusher #1 · 3200950

    56.14107(a) · S&S

  16. violation5212165
    Crusher #1 · 3200950

    56.14112(a)(1)

  17. violation5212164
    Crusher #1 · 3200950

    56.14112(a)(1)

  18. violation5212163
    Crusher #1 · 3200950

    56.12004

  19. violation5212162
    Crusher #1 · 3200950

    56.12013(c)

  20. inspectionF031224
    Crusher #1 · 3200950

    Regular Safety and Health Inspection · 13.3 on-site hours

  21. inspectionF050300
    REED PIT · 3502968

    Special Emphasis Programs · 0.8 on-site hours

  22. inspectionF057391
    Crusher #43521 · 2103572

    Compliance Follow-up Inspection · 1.5 on-site hours

  23. inspectionF005BEF
    Concrete, Inc DBA Knife River · 0405140

    Impoundment Spot Inspection · 0.0 on-site hours

  24. inspectionF046911
    Sioux Falls Quarry · 3900008

    Spot Inspection · 12.8 on-site hours

  25. inspectionF052C49
    503990 · 2103086

    Spot Inspection · 4.8 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

18 linked operators.

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