# SLIP OR FALL OF PERSON
> MSHA accident `220120520088` · 02/15/2012 · RoxCoal, Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)
- **Activity:** Bar down, Includes scaling
- **Injury source:** UNDERGRD MINING MACHINES
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 1 years
## Operator
- **Controller:** Severstal Resources
- **Operator:** RoxCoal, Inc.
- **Mine:** [3608571](https://api.ai-analytics.org/mine/3608571)
## Narrative

The man was standing on the roof bolter to scale a piece of rock down. While stepping, he lost his balance and twisted his knee.

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