← Freeport-McMoRan Sierrita Ops.

Freeport-McMoRan Sierrita Ops. safety activity

MSHA violations, accident reports and inspections across the current mine portfolio.

2025-01-01 – 2026-10-28Database snapshot · 2026-10-28

Safety activity

  1. Powered haulage

    accidentRecord 220262890008
    Freeport-McMoRan Sierrita Ops. · 0200144

    Days away from work only

    Accident narrative

    While loading a haul truck, the shovel dipper dropped into the truck bed due to a brake lockup, causing a severe jolt that lifted the truck bed and resulted in neck and upper back strains to the haul truck operator.

  2. Slip or fall of person

    accidentRecord 220262810023
    Freeport-McMoRan Sierrita Ops. · 0200144

    Days away from work only

    Accident narrative

    Employee was inspecting Pushback 58 for cracks and signs of stormwater intrusion when a small rock under the right foot caused the employee to lose balance and fall onto a sharp rock, impacting the right arm.

  3. Machinery

    accidentRecord 220262750005
    Freeport-McMoRan Sierrita Ops. · 0200144

    Days away from work only

    Accident narrative

    Employee was grinding slag from a welding bench during a beginning welding class when the grinder slipped and caught EE's glove. The rotating wire wheel pulled EE's left hand into the wheel, causing a laceration to the left index finger. Medical treatment was required for the finger injury.

  4. Handling of materials

    accidentRecord 220262750004
    Freeport-McMoRan Sierrita Ops. · 0200144

    Days away from work only

    Accident narrative

    Employee was troubleshooting the transfer of ferric chloride from a temporary containment area using a submersible pump when the discharge hose disconnected during repositioning. Pressurized ferric chloride sprayed into the employee's face and eyes, dislodging EE's safety glasses and causing chemical exposure to the face and eyes.

  5. Compliance Follow-up Inspection

    inspectionRecord F0343E1
    Freeport-McMoRan Sierrita Ops. · 0200144

    1.8 on-site hours reported

  6. Machinery

    accidentRecord 220262710020
    Freeport-McMoRan Sierrita Ops. · 0200144

    Days away from work only

    Accident narrative

    Employee was adjusting an HDPE pipe fusing machine to align with a bleeder when the employee's right hand struck the clamp, causing it to close on the left middle finger. The clamp did not lock, allowing the employee to open it and remove the finger.

  7. Other

    accidentRecord 220262710019
    Freeport-McMoRan Sierrita Ops. · 0200144

    Days away from work only

    Accident narrative

    Employee was completing the first round in Moly Leach and experienced lower right back pain and stiffness while ascending stairs and using the right arm for support. Employee reported feeling the lower right back "lock up". Employee was placed on restricted duty.

  8. Handling of materials

    accidentRecord 220262670009
    Freeport-McMoRan Sierrita Ops. · 0200144

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee was reinstalling grating employee hand caught between grating and handrail.

  9. Retaining dams.

    violationRecord 5059395
    Freeport-McMoRan Sierrita Ops. · 0200144

    30 CFR 56.20010 · Significant and substantial (S&S)

  10. Impoundment Spot Inspection

    inspectionRecord F0343DD
    Freeport-McMoRan Sierrita Ops. · 0200144

    8.3 on-site hours reported

  11. 103 (g) Written Notification Hazard Complaint Inspectio

    inspectionRecord F046E3B
    Freeport-McMoRan Sierrita Ops. · 0200144

    3.8 on-site hours reported

  12. 103 (g) Written Notification Hazard Complaint Inspectio

    inspectionRecord F046E39
    Freeport-McMoRan Sierrita Ops. · 0200144

    5.5 on-site hours reported

  13. Disorders (physical agents)

    accidentRecord 220262450012
    Freeport-McMoRan Sierrita Ops. · 0200144

    Occupatnal illness not deg 1-6

    Accident narrative

    Employee was performing a 250-hour service on a dozer outdoors and assisting with filter replacement when heat exposure and physical exertion contributed to signs of heat stress, including excessive sweating; work was stopped and first aid was initiated in a shaded area. Impairment was limited to heat stress symptoms with no reported physical injury or permanent damage.

  14. Handling of materials

    accidentRecord 220262470024
    Freeport-McMoRan Sierrita Ops. · 0200144

    No dys awy frm wrk,no rstr act

    Accident narrative

    While parked and eating peanuts, the employee bit down on a peanut and chipped a tooth. The employee initially experienced minimal discomfort and continued working; however, approximately 90 minutes later, the pain increased and became intolerable, prompting the employee to notify a supervisor. Damage consisted of a chipped tooth resulting in dental pain requiring evaluation.

  15. Other

    accidentRecord 220262380017
    Freeport-McMoRan Sierrita Ops. · 0200144

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee was completing paperwork near EE's toolbox in Bay 4 of the Truck Shop when a gust of wind blew dust/debris into EE's right eye. The employee was wearing safety glasses at the time of the incident.

  16. 103 (g) Written Notification Hazard Complaint Inspectio

    inspectionRecord F00F82A
    Freeport-McMoRan Sierrita Ops. · 0200144

    5.0 on-site hours reported

  17. Powered haulage

    accidentRecord 220262330026
    Freeport-McMoRan Sierrita Ops. · 0200144

    Days away from work only

    Accident narrative

    Haul truck operator reported not feeling well after the truck had been rough loaded.

  18. Spot Inspection

    inspectionRecord 6858857
    Freeport-McMoRan Sierrita Ops. · 0200144

    0.0 on-site hours reported

  19. Electrical conductors.

    violationRecord 5045775
    Freeport-McMoRan Sierrita Ops. · 0200144

    30 CFR 56.12004 · $313.00 proposed penalty

  20. Horns and backup alarms.

    violationRecord 5221180
    Freeport-McMoRan Sierrita Ops. · 0200144

    30 CFR 56.14132(b)(2) · $165.00 proposed penalty

  21. Safety defects; examination, correction and records.

    violationRecord 5221179
    Freeport-McMoRan Sierrita Ops. · 0200144

    30 CFR 56.14100(b) · $165.00 proposed penalty

  22. Machinery, equipment, and tools.

    violationRecord 5052900
    Freeport-McMoRan Sierrita Ops. · 0200144

    30 CFR 56.14205 · $1,219.00 proposed penalty

  23. General requirements.

    violationRecord 5045774
    Freeport-McMoRan Sierrita Ops. · 0200144

    30 CFR 56.4200(b)(2) · $151.00 proposed penalty

  24. Training of miners assigned to a task in which they have had no previous experience; minimum courses of instruction.

    violationRecord 5221178
    Freeport-McMoRan Sierrita Ops. · 0200144

    30 CFR 48.27(a) · $366.00 proposed penalty

  25. Machinery, equipment, and tools.

    violationRecord 5045773
    Freeport-McMoRan Sierrita Ops. · 0200144

    30 CFR 56.14205 · $165.00 proposed penalty

Sources and definitions

MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).

Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.

Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.

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.