# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220211460017` · 04/28/2021 · Knight Hawk Coal, LLC
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Struck against stationary object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Walking, Running
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 11
- **Mine experience:** 12 years
## Operator
- **Controller:** CBR Investments LLC; Arch Coal Inc
- **Operator:** Knight Hawk Coal, LLC
- **Mine:** [1103147](https://api.ai-analytics.org/mine/1103147)
## Narrative

Employee was filling the unit service truck with hydraulic oil. When walking around the truck they stepped on a rock that was buried in the bulk rock dust twisting their left knee. Employee was deemed unable to work by a specialist on 5-20-2021.

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