# MACHINERY
> MSHA accident `220180090004` · 12/19/2017 · Rosebud Mining Company
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck by flying object
- **Occupation:** Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)
- **Activity:** Observe operations
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** CONTUSN,BRUISE,INTAC SKIN
- **Body part:** KNEE/PATELLA
- **Days lost:** 3
- **Mine experience:** 1 years
## Operator
- **Controller:** J Clifford  Forrest III
- **Operator:** Rosebud Mining Company
- **Mine:** [3609477](https://api.ai-analytics.org/mine/3609477)
## Narrative

Employee was positioned approx. 20' to 30' behind the tail of the miner. The coal chain jammed on the miner and when it let loose, something came out striking employee in the left knee.

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