# MACHINERY
> MSHA accident `220181510006` · 05/21/2018 · Northern Star (Pogo) LLC
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** MACHINERY
- **Accident type:** Caught in, under or between running or meshing objects
- **Occupation:** Drill operator
- **Activity:** Surface equipment, NEC
- **Injury source:** MACHINE,NEC-WELDR,OFC MAC
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** SHOULDERS (COLLARBONE/CLAVICLE/SCAPULA)
- **Days lost:** 0
- **Mine experience:** 3 years
## Operator
- **Controller:** Sumitomo Metal Mining Co Ltd
- **Operator:** Northern Star (Pogo) LLC
- **Mine:** [5001642](https://api.ai-analytics.org/mine/5001642)
## Narrative

Driller was lowering core tube retraction tool (also known as the overshot tool) down into the cased hole. As the driller was returning the overshot tool to its resting location, EE inadvertently tripped hydraulic lever to the ""up"" position, rather than the ""down"" position, which pulled the driller's arm upwards.

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