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. violation5166513
    Boron Operations · 0400743

    56.16001 · $151.00 proposed

  2. violation5166512
    Boron Operations · 0400743

    56.16001 · $151.00 proposed

  3. inspectionF029C58
    Boron Operations · 0400743

    Impoundment Spot Inspection · 1.5 on-site hours

  4. violation9892995
    Boron Operations · 0400743

    56.12030 · $177.00 proposed

  5. violation9892994
    Boron Operations · 0400743

    56.16005 · $267.00 proposed

  6. violation5165529
    Boron Operations · 0400743

    56.20003(a) · $226.00 proposed

  7. violation5053289
    Copperton Concentrator · 4201996

    56.4201(a)(1) · $151.00 proposed

  8. violation5053288
    Copperton Concentrator · 4201996

    56.14100(b) · $151.00 proposed

  9. violation9892993
    Boron Operations · 0400743

    56.14107(a) · $398.00 proposed

  10. violation9892992
    Boron Operations · 0400743

    56.16001 · $151.00 proposed

  11. violation9892991
    Boron Operations · 0400743

    56.11003 · $267.00 proposed

  12. violation5165528
    Boron Operations · 0400743

    50.30(a) · $151.00 proposed

  13. violation9892990
    Boron Operations · 0400743

    56.12032 · $366.00 proposed

  14. violation9892989
    Boron Operations · 0400743

    56.14112(b) · $592.00 proposed

  15. violation5166511
    Boron Operations · 0400743

    56.14131(a) · $177.00 proposed

  16. violation5166510
    Boron Operations · 0400743

    56.4402 · S&S · $1,320.00 proposed

  17. violation5166509
    Boron Operations · 0400743

    56.16001 · $267.00 proposed

  18. violation5053286
    Copperton Concentrator · 4201996

    56.4011 · S&S · $2,133.00 proposed

  19. violation5053285
    Copperton Concentrator · 4201996

    56.12004 · $288.00 proposed

  20. violation5053284
    Copperton Concentrator · 4201996

    47.41(a) · $151.00 proposed

  21. violation5053283
    Copperton Concentrator · 4201996

    56.14100(b) · $165.00 proposed

  22. violation5053282
    Copperton Concentrator · 4201996

    47.41(a) · $165.00 proposed

  23. violation5053281
    Copperton Concentrator · 4201996

    56.12004 · $366.00 proposed

  24. violation5053280
    Copperton Concentrator · 4201996

    56.14130(i) · $9,757.00 proposed

  25. accident220253210012
    Kennecott Keystone Underground · 4201392

    POWERED HAULAGE · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Sandvik Scoop LH02 operator was mucking in 3250 OD25. As the scoop was moving around a corner the operator was leaning forward with their head turned to get better visibility. The scoop hit a bump causing the operator's head, above the right eye, to contact the window, the operator briefly lost consciousness.

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.