# MACHINERY
> MSHA accident `220253280044` · 11/21/2025 · Kennecott Utah Copper LLC
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** MACHINERY
- **Accident type:** Caught in, under or between a moving and a stationary object
- **Occupation:** Master mechanic, Foreman, Supervisor
- **Activity:** Machine maintenance
- **Injury source:** HAND TOOLS,POWERED,NEC
- **Nature of injury:** OTHER INJURY,NEC
- **Body part:** FINGER(S)/THUMB
- **Days lost:** 0
- **Mine experience:** 5.48 years
## Operator
- **Controller:** Rio Tinto Group
- **Operator:** Kennecott Utah Copper LLC
- **Mine:** [4200149](https://api.ai-analytics.org/mine/4200149)
## Narrative

Employee was using a 3/4"" drive impact gun to get the bolts properly torqued. Some of them needed to have a backer wrench to keep bolt from spinning. On one of the bolts the wrench caught the nylock part when torquing the impact, and pinched right hand pinky fingertip.

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