# HANDLING OF MATERIALS
> MSHA accident `220102430010` · 08/26/2010 · Thompson Creek Mining Company
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion NEC
- **Occupation:** Security guard, Watchman
- **Activity:** Walking, Running
- **Injury source:** STEPS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 3 years
## Operator
- **Controller:** Thompson Creek Metals Co USA
- **Operator:** Thompson Creek Mining Company
- **Mine:** [1000531](https://api.ai-analytics.org/mine/1000531)
## Narrative

Employee was sweeping stairwell and stepped down to next step when her right knee locked on her then she felt and heard it pop.

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