# MACHINERY
> MSHA accident `220112850019` · 10/11/2011 · Sterling Mining Corporation
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck by... NEC
- **Occupation:** Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)
- **Activity:** Roof bolter, Drilling
- **Injury source:** DRILL STEEL (ALL SIZES)
- **Nature of injury:** CUT,LACER,PUNCT-OPN WOUND
- **Body part:** FINGER(S)/THUMB
- **Days lost:** 2
- **Mine experience:** 1 years
## Operator
- **Controller:** W Thomas  Mackall
- **Operator:** Sterling Mining Corporation
- **Mine:** [3304591](https://api.ai-analytics.org/mine/3304591)
## Narrative

While attempting to work loose a stuck drill steel in the roof, the drill steel became bound in the drill chuck with some side pressure. The drill steel snapped loose from the chuck striking the middle finger, lacerating the knuckle of his left hand.

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