# MACHINERY
> MSHA accident `220113010044` · 08/06/2011 · Enterprise Mining Company, LLC
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Over-exertion NEC
- **Occupation:** Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)
- **Activity:** Roof bolter, NEC
- **Injury source:** UNDERGRD MINING MACHINES
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 58
- **Mine experience:** 7 years
## Operator
- **Controller:** Alpha Natural Resources, Inc.
- **Operator:** Enterprise Mining Company, LLC
- **Mine:** [1519116](https://api.ai-analytics.org/mine/1519116)
## Narrative

The employee was roof bolting in the #3 entry on the MMU. 002 section. The employee was down on his knees and started to stand up when something popped in his right knee.

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