# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220172120015` · 07/19/2017 · Armstrong Coal Company, Inc.
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Rubbed or abraded
- **Occupation:** Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)
- **Activity:** Roof bolter, Inserting bolt
- **Injury source:** MINE FLOOR,BOTTOM,FOOTWAL
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 79
- **Mine experience:** 5 years
## Operator
- **Controller:** Armstrong Energy Inc
- **Operator:** Armstrong Coal Company, Inc.
- **Mine:** [1519535](https://api.ai-analytics.org/mine/1519535)
## Narrative

Employee was on knees bolting, when ee twisted and felt left knee pop.

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