ACTIVE / CONTROLLER PORTFOLIO

Summit Materials LLC

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

MSHA CONTROLLER IDM02046

MINE PORTFOLIO

40 of 40 mines and facilities

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

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Atoka Quarry3402026 · ActiveAtoka, OKSurface · MSHA: Crushed, Broken Limestone NEC——3029.8
Benjamin4202528 · ActiveUtah, UTSurface · MSHA: Construction Sand and Gravel——10127.3
Bluffdale Pit4202179 · ActiveUtah, UTSurface · MSHA: Construction Sand and Gravel——10131.5
Brigham Pit4202523 · ActiveBox Elder, UTSurface · MSHA: Construction Sand and Gravel——14028.5
Coleman Quarry-SCS Materials3402240 · ActiveAtoka, OKSurface · MSHA: Dimension Limestone——15140.3
Columbus Plant4104393 · ActiveColorado, TXSurface · MSHA: Construction Sand and Gravel——5133.0
Crusher LU300-LU4004102577 · ActiveGlasscock, TXSurface · MSHA: Crushed, Broken Stone NEC——7145.0
Duncan Plant4105187 · ActiveColorado, TXSurface · MSHA: Sand, Industrial NEC——7228.8
Durbin Quarry1401719 · ActiveElk, KSSurface · MSHA: Crushed, Broken Limestone NEC——6026.8
Eagle Lake Plant4104889 · ActiveColorado, TXSurface · MSHA: Construction Sand and Gravel——7139.5
Ellinger Plant4104154 · ActiveFayette, TXSurface · MSHA: Construction Sand and Gravel——4037.5
Erda Pit4201479 · ActiveSalt Lake, UTSurface · MSHA: Construction Sand and Gravel——008.0
Grantsville Pit4202637 · ActiveTooele, UTSurface · MSHA: Construction Sand and Gravel——24045.0
Hanna's Bend Plant4104631 · ActiveLiberty, TXSurface · MSHA: Construction Sand and Gravel——8132.5
Hays Quarry4104514 · ActiveHays, TXSurface · MSHA: Crushed, Broken Limestone NEC——7242.3
Herriman Pit4201823 · ActiveSalt Lake, UTSurface · MSHA: Construction Sand and Gravel——4022.0
HIGHLAND PIT4200941 · ActiveUtah, UTSurface · MSHA: Construction Sand and Gravel——19335.8
Hockley Plant4103491 · ActiveHarris, TXSurface · MSHA: Construction Sand and Gravel——9034.0
Hyrum Pit4202360 · ActiveCache, UTSurface · MSHA: Construction Sand and Gravel——12036.5
Maryland Creek0503800 · ActiveSummit, COSurface · MSHA: Construction Sand and Gravel——17048.3
MONA PIT4202212 · ActiveJuab, UTSurface · MSHA: Construction Sand and Gravel——8037.8
Oxford Sand and Gravel1400522 · ActiveSumner, KSSurface · MSHA: Construction Sand and Gravel——18061.0
Parley's Stone4202102 · ActiveSalt Lake, UTSurface · MSHA: Construction Sand and Gravel——11041.8
Pit #1 43rd Ave0202867 · ActiveMaricopa, AZSurface · MSHA: Construction Sand and Gravel——16335.3
Plant 1 Avondale0203390 · ActiveMaricopa, AZSurface · MSHA: Construction Sand and Gravel——19133.5
Pope's Point3401930 · ActiveBryan, OKSurface · MSHA: Sand, Industrial NEC——9045.5
Portable Plant #21401463 · ActiveCrawford, KSSurface · MSHA: Crushed, Broken Stone NEC——1232.3
Portable Plant #31401464 · ActiveWilson, KSSurface · MSHA: Crushed, Broken Limestone NEC——7033.0
Portable Plant #61401828 · ActiveNeosho, KSSurface · MSHA: Crushed, Broken Limestone NEC——3133.3
Sawyer Quarry3401950 · ActiveChoctaw, OKSurface · MSHA: Crushed, Broken Sandstone——11087.5
SEVERY QUARRY1401584 · ActiveGreenwood, KSSurface · MSHA: Crushed, Broken Limestone NEC——7030.0
Smith Plant4105210 · ActiveColorado, TXSurface · MSHA: Crushed, Broken Stone NEC——6036.8
SPRING PLANT4105125 · ActiveHarris, TXSurface · MSHA: Construction Sand and Gravel——6240.5
STEWART STONE MITCHELL3401400 · ActivePawnee, OKSurface · MSHA: Crushed, Broken Limestone NEC——15037.8
Stockton Pit4202480 · ActiveTooele, UTSurface · MSHA: Construction Sand and Gravel——10134.5
Vines Sand & Gravel4103348 · ActiveWard, TXSurface · MSHA: Construction Sand and Gravel——4035.5
Vox Plant4105081 · ActiveColorado, TXSurface · MSHA: Construction Sand and Gravel——5022.8
Washplant 40503809 · ActiveLa Plata, COSurface · MSHA: Construction Sand and Gravel——3021.0
Wegenhoft Plant4102916 · ActiveFayette, TXSurface · MSHA: Construction Sand and Gravel——4038.0
Wichita Sand and Gravel1400543 · ActiveSedgwick, KSSurface · MSHA: Construction Sand and Gravel——30064.8

LOCATION

Portfolio map

40 of 40 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

381

53 significant & substantial (S&S)

  1. 2025 Q145
  2. 2025 Q292
  3. 2025 Q340
  4. 2025 Q445
  5. 2026 Q177
  6. 2026 Q238
  7. 2026 Q338
  8. 2026 Q4 *6

Accident records

24

0 records classified as fatality

  1. 2025 Q12
  2. 2025 Q20
  3. 2025 Q35
  4. 2025 Q43
  5. 2026 Q16
  6. 2026 Q24
  7. 2026 Q34
  8. 2026 Q4 *0

Proposed penalties · USD

143,602.00

366 of 381 violations with amounts

  1. 2025 Q110,989
  2. 2025 Q230,947
  3. 2025 Q314,793
  4. 2025 Q434,389
  5. 2026 Q129,524
  6. 2026 Q213,431
  7. 2026 Q39,529
  8. 2026 Q4 *—

On-site inspection hours

1,474.25

191 inspections · 191 with hours

  1. 2025 Q1219.50
  2. 2025 Q2261.25
  3. 2025 Q3163.50
  4. 2025 Q4170.25
  5. 2026 Q1253.75
  6. 2026 Q2173.75
  7. 2026 Q3218.25
  8. 2026 Q4 *14.00
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q145910,989.002025219.5
2025-Q2921230,947.000031261.3
2025-Q340614,793.005027163.5
2025-Q4451134,389.003024170.3
2026-Q177829,524.006031253.8
2026-Q238313,431.004023173.8
2026-Q33849,529.004026218.3
2026-Q4 *60—00414.0

Most cited CFR sections

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

Safety activity

  1. violation5160739
    Plant 1 Avondale · 0203390

    50.20(a) · $151.00 proposed

  2. accident220262520028
    Eagle Lake Plant · 4104889

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Employee was assisting with uprighting a 55-gallon drum of hydraulic oil causing them to sprain their right hand.

  3. inspectionF03B9BB
    Plant 1 Avondale · 0203390

    Regular Safety and Health Inspection · 14.3 on-site hours

  4. violation5160738
    Plant 1 Avondale · 0203390

    56.14100(b)

  5. violation5160737
    Plant 1 Avondale · 0203390

    56.4102 · S&S

  6. violation5160736
    Plant 1 Avondale · 0203390

    56.4102

  7. violation5160735
    Plant 1 Avondale · 0203390

    56.20003(a) · $313.00 proposed

  8. violation5160734
    Plant 1 Avondale · 0203390

    56.4102 · $465.00 proposed

  9. accident220262510001
    Hays Quarry · 4104514

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    EE was installing a hydraulic hose on a John Deere Loader. EE had to use extra force to connect the hydraulic hose since it was also in an a tough angle to get to. The extra force and oily hose caused the hose to slip off the connector which caused EE's hand to go forward into the machine frame.

  10. inspectionF01F06F
    Vines Sand & Gravel · 4103348

    Regular Safety and Health Inspection · 7.0 on-site hours

  11. inspectionF048FB6
    SEVERY QUARRY · 1401584

    Regular Safety and Health Inspection · 4.3 on-site hours

  12. violation5220059
    SEVERY QUARRY · 1401584

    56.12004 · $151.00 proposed

  13. violation5220058
    SEVERY QUARRY · 1401584

    56.12004 · $151.00 proposed

  14. violation5170327
    Crusher LU300-LU400 · 4102577

    56.3131 · $151.00 proposed

  15. inspectionF017E26
    Crusher LU300-LU400 · 4102577

    Regular Safety and Health Inspection · 11.0 on-site hours

  16. inspectionF02F5D3
    Hockley Plant · 4103491

    Regular Safety and Health Inspection · 6.5 on-site hours

  17. violation5175235
    Hockley Plant · 4103491

    56.12018 · $151.00 proposed

  18. violation5175234
    Hockley Plant · 4103491

    47.41(a) · $151.00 proposed

  19. inspectionF03A530
    Atoka Quarry · 3402026

    Regular Safety and Health Inspection · 11.0 on-site hours

  20. violation5250204
    Atoka Quarry · 3402026

    56.11003 · $151.00 proposed

  21. violation5175856
    Coleman Quarry-SCS Materials · 3402240

    56.4101 · $151.00 proposed

  22. inspectionF02CC97
    Wichita Sand and Gravel · 1400543

    Compliance Follow-up Inspection · 1.0 on-site hours

  23. inspectionF03A7EF
    Coleman Quarry-SCS Materials · 3402240

    Regular Safety and Health Inspection · 19.0 on-site hours

  24. inspectionF045107
    Parley's Stone · 4202102

    Regular Safety and Health Inspection · 15.3 on-site hours

  25. violation5175855
    Coleman Quarry-SCS Materials · 3402240

    56.14207 · $151.00 proposed

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

8 linked operators.

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