# SLIP OR FALL OF PERSON
> MSHA accident `220083460021` · 12/01/2008 · Freeport-McMoRan Sierrita Ops.
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Mechanic helper
- **Activity:** Machine maintenance
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 121
- **Mine experience:** 3.08 years
## Operator
- **Controller:** Freeport-McMoRan Inc
- **Operator:** Freeport-McMoRan Sierrita Ops.
- **Mine:** [0200144](https://api.ai-analytics.org/mine/0200144)
## Narrative

Employee claims that his foot slipped and his knee twisted when he was opening the door to the engine compartment. Initial doctor's exam was 12/1; however, after further examination by the doctor on 12/8, employee was not able to perform his regular work assignment.

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