# MACHINERY
> MSHA accident `220112130004` · 07/21/2011 · RoxCoal, Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY 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:** DRILL STEEL (ALL SIZES)
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** WRIST
- **Days lost:** 0
- **Mine experience:** 1.77 years
## Operator
- **Controller:** Severstal Resources
- **Operator:** RoxCoal, Inc.
- **Mine:** [3608746](https://api.ai-analytics.org/mine/3608746)
## Narrative

The man was attempting to separate 2 drill steels that were stuck together.  As he was raising and lowering the drill head to loosen the drill steels, he twisted his wrist.

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