# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220121920004` · 06/29/2012 · Luminant Mining Company LLC 
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Struck against stationary object
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Walking, Running
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 1
- **Mine experience:** 5 years
## Operator
- **Controller:** Energy Future Holdings Corporation
- **Operator:** Luminant Mining Company LLC 
- **Mine:** [4101192](https://api.ai-analytics.org/mine/4101192)
## Narrative

An employee was exiting his vehicle in the employee parking lot and stumbled on a rock.  Later that day the employee noticed some discomfort in his left knee and related it back to the incident that happened earlier that morning in the employee parking lot. Employee continued working until feeling discomfort and then contacted his supervisor the following day.

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