ALL STATUSES / 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

201 of 201 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
WILLIS PLANT3401832 · AbandonedMarshall, OKSurface · MSHA: Crushed, Broken Limestone NEC——00—

LOCATION

Portfolio map

104 of 201 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

459

69 significant & substantial (S&S)

  1. 2025 Q159
  2. 2025 Q2111
  3. 2025 Q354
  4. 2025 Q464
  5. 2026 Q187
  6. 2026 Q238
  7. 2026 Q340
  8. 2026 Q4 *6

Accident records

31

0 records classified as fatality

  1. 2025 Q12
  2. 2025 Q24
  3. 2025 Q35
  4. 2025 Q43
  5. 2026 Q17
  6. 2026 Q26
  7. 2026 Q34
  8. 2026 Q4 *0

Proposed penalties · USD

170,394.00

441 of 459 violations with amounts

  1. 2025 Q117,268
  2. 2025 Q238,019
  3. 2025 Q316,907
  4. 2025 Q444,055
  5. 2026 Q131,034
  6. 2026 Q213,431
  7. 2026 Q39,680
  8. 2026 Q4 *—

On-site inspection hours

1,999.50

263 inspections · 263 with hours

  1. 2025 Q1302.75
  2. 2025 Q2397.25
  3. 2025 Q3250.25
  4. 2025 Q4272.25
  5. 2026 Q1300.25
  6. 2026 Q2219.75
  7. 2026 Q3243.00
  8. 2026 Q4 *14.00
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q1591217,268.002038302.8
2025-Q21111938,019.004045397.3
2025-Q354716,907.005042250.3
2025-Q4641544,055.003033272.3
2026-Q187931,034.007041300.3
2026-Q238313,431.006029219.8
2026-Q34049,680.004031243.0
2026-Q4 *60—00414.0

Most cited CFR sections

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

Safety activity

  1. inspectionF03A362
    Portable Plant #2 · 1401463

    Regular Safety and Health Inspection · 0.0 on-site hours

  2. violation5175903
    Pope's Point · 3401930

    56.11012

  3. violation5175902
    Pope's Point · 3401930

    50.30(a)

  4. violation5175901
    Pope's Point · 3401930

    50.30(a)

  5. violation5175900
    Pope's Point · 3401930

    56.4602

  6. inspectionF0451D5
    Pope's Point · 3401930

    Regular Safety and Health Inspection · 0.0 on-site hours

  7. inspectionF04511A
    Benjamin · 4202528

    Regular Safety and Health Inspection · 8.5 on-site hours

  8. violation5210746
    Benjamin · 4202528

    56.14103(b)

  9. violation5210745
    Benjamin · 4202528

    56.4201(a)(2)

  10. inspectionF00AC97
    Washplant 4 · 0503809

    Regular Safety and Health Inspection · 5.5 on-site hours

  11. inspectionF04312B
    Herriman Pit · 4201823

    Compliance Follow-up Inspection · 0.5 on-site hours

  12. violation5210292
    Gentry Pit · 1001668

    56.12008

  13. inspectionF03BA98
    Gentry Pit · 1001668

    Regular Safety and Health Inspection · 3.0 on-site hours

  14. inspectionF043128
    Herriman Pit · 4201823

    Regular Safety and Health Inspection · 3.0 on-site hours

  15. violation5210863
    Herriman Pit · 4201823

    56.4101

  16. violation5210862
    Herriman Pit · 4201823

    56.14207 · S&S

  17. inspectionF037735
    Stockton Pit · 4202480

    103 (g) Written Notification Hazard Complaint Inspectio · 2.0 on-site hours

  18. inspectionF03AA66
    Brigham Pit · 4202523

    Spot Inspection · 9.8 on-site hours

  19. accident220262740006
    Portable Plant #2 · 1401463

    HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee was rearranging conveyor rollers on a shelf and mashed EE's finger between the roller and the wooden shelf divider.

  20. inspectionF0446A4
    Washplant 3 · 0504565

    Regular Safety and Health Inspection · 9.3 on-site hours

  21. inspectionF037732
    Erda Pit · 4201479

    Regular Safety and Health Inspection · 5.0 on-site hours

  22. inspectionF043125
    West Valley · 4201980

    Spot Inspection · 10.0 on-site hours

  23. inspectionF037730
    Parley's Stone · 4202102

    103 (g) Written Notification Hazard Complaint Inspectio · 3.0 on-site hours

  24. violation9906864
    Parley's Stone · 4202102

    56.9300(b) · S&S

  25. inspectionF03A354
    Fort Scott Quarry · 1401852

    Regular Safety and Health Inspection · 1.8 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

14 linked operators.

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