# DISORDERS (REPEATED TRAUMA)
> MSHA accident `220112200015` · 02/25/2011 · Trapper Mining Inc
## Details
- **Degree of injury:** OCCUPATNAL ILLNESS NOT DEG 1-6
- **Classification:** DISORDERS (REPEATED TRAUMA)
- **Accident type:** Over-exertion NEC
- **Occupation:** Welder (shop)
- **Activity:** Handling supplies or material
- **Injury source:** MISCELLANEOUS,NEC
- **Nature of injury:** UNCLASSIFIED,NOT DETERMED
- **Body part:** KNEE/PATELLA
- **Days lost:** 13
- **Mine experience:** 16.9 years
## Operator
- **Controller:** Salt River Project; MidAmerican Energy Holdings Company; Tri-State Gener
- **Operator:** Trapper Mining Inc
- **Mine:** [0502838](https://api.ai-analytics.org/mine/0502838)
## Narrative

Employee had surgery on his right knee on 7/28/11 for treatment of chronic knee pain. Employee first reported pain and swelling on 2/28/11.

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