# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220163090008` · 10/26/2016 · CalPortland
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Struck against stationary object
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Inspect equipment or mine
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 3.92 years
## Operator
- **Controller:** Taiheiyo Cement Corp
- **Operator:** CalPortland
- **Mine:** [0400011](https://api.ai-analytics.org/mine/0400011)
## Narrative

EE was performing pre-shift examination of EE's 992C front end loader and while walking around the backside of the loader EE stepped on a rock that caused EE to loose EE's balance. EE twisted EE's knee and heard EE's knee pop. EE was taken for medical evaluation and placed on modified duty.

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