# MACHINERY
> MSHA accident `220162660027` · 09/21/2016 · BHP Billiton Mine Management Company
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck by... NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Hand tools (powered)
- **Injury source:** HAND TOOLS,POWERED,NEC
- **Nature of injury:** CRUSHING
- **Body part:** FINGER(S)/THUMB
- **Days lost:** 257
- **Mine experience:** 22.69 years
## Operator
- **Controller:** Navajo Nation
- **Operator:** BHP Billiton Mine Management Company
- **Mine:** [2900097](https://api.ai-analytics.org/mine/2900097)
## Narrative

Employee was tightening wheel lug nuts, when the impact trigger contacted the wheel lock ring. It activated the air impact gun wrench causing the employee's left hand to be smashed. Left hand was position on the socket extension, hand was smashed against wheel hub.

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