# MACHINERY
> MSHA accident `220153060065` · 08/07/2015 · Lone Mountain Processing LLC
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **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:** SPRAIN,STRAIN RUPT DISC
- **Body part:** FINGER(S)/THUMB
- **Days lost:** 0
- **Mine experience:** 10 years
## Operator
- **Controller:** Arch Resources Inc
- **Operator:** Lone Mountain Processing LLC
- **Mine:** [1518647](https://api.ai-analytics.org/mine/1518647)
## Narrative

When employee lowered the boom on the roof bolter after drilling a hole, the steel came out of chuck and struck him on the left thumb.  He later sought medical treatment and had surgery on the thumb to repair a torn ligament on 10/22/2015.

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