# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220162210028` · 07/28/2016 · Tilden Mining Company L C
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY 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:** Machine maintenance
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 8.62 years
## Operator
- **Controller:** U.S. Steel Canada; Cliffs Natural Resources Inc
- **Operator:** Tilden Mining Company L C
- **Mine:** [2000422](https://api.ai-analytics.org/mine/2000422)
## Narrative

Employee experienced knee strain sustained when stepping on rock while working inside L10 Primary Mill performing mill lining work. Evaluated by nurse practitioner and returned to full duty. Put on restricted duty 8-5-16.  

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