# SLIP OR FALL OF PERSON
> MSHA accident `220150910023` · 03/18/2015 · Trapper Mining Inc
## Details
- **Degree of injury:** DAYS AWAY FROM WORK 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:** Machine maintenance
- **Injury source:** GROUND
- **Nature of injury:** DISLOCATION
- **Body part:** KNEE/PATELLA
- **Days lost:** 48
- **Mine experience:** 4.9 years
## Operator
- **Controller:** Salt River Project; MidAmerican Energy Holdings Company; Tri-State Gener
- **Operator:** Trapper Mining Inc
- **Mine:** [0502838](https://api.ai-analytics.org/mine/0502838)
## Narrative

Employee repositioned right leg while conducting maintenance work, stepped backwards and felt a pop in right knee.  Diagnosed with partial dislocation and restricted from all work 3/31.

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