# SLIP OR FALL OF PERSON
> MSHA accident `220251950029` · 07/12/2025 · Kennecott Utah Copper LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Walking, Running
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 0
- **Mine experience:** 13.12 years
## Operator
- **Controller:** Rio Tinto Group
- **Operator:** Kennecott Utah Copper LLC
- **Mine:** [4200149](https://api.ai-analytics.org/mine/4200149)
## Narrative

At approximately 04:30 am, Craftsman was walking from change house to truck shop through haul truck access road walkway. As they approached eastern side, they stepped on a rock and was knocked off balance, but not falling. The felt a crack/pop in lower back. The pain increased later in the shift. Supervisor was notified at 10:30am and then taken to clinic for further evaluation.

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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*