# HANDLING OF MATERIALS
> MSHA accident `220121160015` · 04/07/2012 · Graymont Western US Inc
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion NEC
- **Occupation:** Warehouseman, Bagger, Palletizer/Stacker, Store keeper, Packager, Fabricator, Cleaning plant operator
- **Activity:** Walking, Running
- **Injury source:** STEPS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 33
- **Mine experience:** 14.54 years
## Operator
- **Controller:** Graymont Ltd
- **Operator:** Graymont Western US Inc
- **Mine:** [4201647](https://api.ai-analytics.org/mine/4201647)
## Narrative

Hyper-extended knee while walking down stairs.

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