ACTIVE / CONTROLLER PORTFOLIO

Rio Tinto Group

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

MSHA CONTROLLER IDM01812

MINE PORTFOLIO

4 of 4 mines and facilities

2025-01-01 – 2026-10-18. Active records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Bingham Canyon Mine4200149 · Active6/8 quarters reportedSalt Lake, UTSurface · MSHA: Copper Ore NEC03,389,047246461,136.0
Boron Operations0400743 · Active6/8 quarters reportedKern, CASurface · MSHA: Boron Minerals02,253,99114014626.3
Copperton Concentrator4201996 · Active6/8 quarters reportedSalt Lake, UTFacility · MSHA: Copper Ore NEC0928,6742145698.8
Kennecott Keystone Underground4201392 · Active6/8 quarters reportedSalt Lake, UTUnderground · MSHA: Copper Ore NEC0184,02010510514.3

LOCATION

Portfolio map

4 of 4 mines with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-18Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

705

111 significant & substantial (S&S)

  1. 2025 Q197
  2. 2025 Q278
  3. 2025 Q3118
  4. 2025 Q4194
  5. 2026 Q121
  6. 2026 Q2127
  7. 2026 Q345
  8. 2026 Q4 *25

Accident records

75

1 records classified as fatality

  1. 2025 Q113
  2. 2025 Q29
  3. 2025 Q321
  4. 2025 Q413
  5. 2026 Q18
  6. 2026 Q23
  7. 2026 Q38
  8. 2026 Q4 *0

Proposed penalties · USD

806,088.00

665 of 705 violations with amounts

  1. 2025 Q1105,309
  2. 2025 Q269,361
  3. 2025 Q3224,568
  4. 2025 Q4178,676
  5. 2026 Q122,590
  6. 2026 Q2181,674
  7. 2026 Q323,910
  8. 2026 Q4 *—

On-site inspection hours

2,975.25

84 inspections · 84 with hours

  1. 2025 Q1594.75
  2. 2025 Q2315.25
  3. 2025 Q3463.25
  4. 2025 Q4523.50
  5. 2026 Q1167.50
  6. 2026 Q2552.50
  7. 2026 Q3268.00
  8. 2026 Q4 *90.50
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q19712105,309.0013011594.8
2025-Q2781369,361.009013315.3
2025-Q311827224,568.0021017463.3
2025-Q419426178,676.0013010523.5
2026-Q121222,590.00816167.5
2026-Q212713181,674.003011552.5
2026-Q3451323,910.008012268.0
2026-Q4 *255—00490.5

Most cited CFR sections

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

Safety activity

  1. violation9892988
    Boron Operations · 0400743

    56.20003(a) · S&S · $1,431.00 proposed

  2. violation9892987
    Boron Operations · 0400743

    56.14107(a) · $504.00 proposed

  3. violation9892986
    Boron Operations · 0400743

    56.14112(a)(1) · $336.00 proposed

  4. violation9892985
    Boron Operations · 0400743

    56.14112(a)(1) · $504.00 proposed

  5. violation5166508
    Boron Operations · 0400743

    56.4200(b)(2) · $151.00 proposed

  6. violation5165527
    Boron Operations · 0400743

    56.17001 · $151.00 proposed

  7. violation5165526
    Boron Operations · 0400743

    50.30(a) · $151.00 proposed

  8. violation5165524
    Boron Operations · 0400743

    48.26 · $168.00 proposed

  9. violation5055299
    Copperton Concentrator · 4201996

    56.4201(a)(2) · $151.00 proposed

  10. violation5055298
    Copperton Concentrator · 4201996

    56.12004 · $151.00 proposed

  11. violation5055297
    Copperton Concentrator · 4201996

    56.16005 · S&S · $642.00 proposed

  12. violation5055296
    Copperton Concentrator · 4201996

    56.20003(a) · S&S · $1,037.00 proposed

  13. violation5055295
    Copperton Concentrator · 4201996

    56.13021 · S&S · $336.00 proposed

  14. violation5055294
    Copperton Concentrator · 4201996

    56.12032 · $193.00 proposed

  15. violation5055293
    Copperton Concentrator · 4201996

    56.14112(b) · $193.00 proposed

  16. violation5055292
    Copperton Concentrator · 4201996

    56.12032 · $193.00 proposed

  17. inspectionF016FC9
    Boron Operations · 0400743

    Regular Safety and Health Inspection · 130.0 on-site hours

  18. violation9892984
    Boron Operations · 0400743

    56.12004 · $465.00 proposed

  19. violation9892983
    Boron Operations · 0400743

    56.14107(a) · $1,126.00 proposed

  20. violation9892982
    Boron Operations · 0400743

    56.20003(a) · $288.00 proposed

  21. violation9892981
    Boron Operations · 0400743

    56.14112(a)(1) · $504.00 proposed

  22. violation5166507
    Boron Operations · 0400743

    56.14100(b) · $313.00 proposed

  23. violation5166506
    Boron Operations · 0400743

    56.14100(c) · S&S · $2,312.00 proposed

  24. violation5166505
    Boron Operations · 0400743

    56.9300(a) · S&S · $5,144.00 proposed

  25. violation5165523
    Boron Operations · 0400743

    56.18002(a) · S&S · $2,312.00 proposed

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.

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

2 linked operators.

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