# MACHINERY
> MSHA accident `220112160041` · 07/21/2011 · Frontier Coal Company, Inc.
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck by falling object
- **Occupation:** Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)
- **Activity:** Roof bolter, Drilling
- **Injury source:** DRILL STEEL (ALL SIZES)
- **Nature of injury:** CONTUSN,BRUISE,INTAC SKIN
- **Body part:** HAND (NOT WRIST OR FINGERS)
- **Days lost:** 1
- **Mine experience:** 0.04 years
## Operator
- **Controller:** Mechel Oao
- **Operator:** Frontier Coal Company, Inc.
- **Mine:** [4609227](https://api.ai-analytics.org/mine/4609227)
## Narrative

Employee stated that while drilling the mine roof to install a roof bolt, the drill steel fell out and struck him on the hand.

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