# MACHINERY
> MSHA accident `220221300012` · 04/29/2022 · NACG Texas, Inc.
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** MACHINERY
- **Accident type:** Struck by flying object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Machine maintenance
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** CUT,LACER,PUNCT-OPN WOUND
- **Body part:** CHEST (RIBS/BREAST BONE/CHEST ORGNS)
- **Days lost:** 0
- **Mine experience:** 40 years
## Operator
- **Controller:** North American Construction Group, LTD
- **Operator:** NACG Texas, Inc.
- **Mine:** [4102840](https://api.ai-analytics.org/mine/4102840)
## Narrative

Employee was installing right rear outside tire on Articulating Tractor while using a 5 Spline Air Impact to tighten the bolts. While using the impact to tighten the bolts, the impact socket broke causing the impact to hit employee in the left upper chest area. The broken impact socket caused a small laceration on the employees chest requiring 4 stitches.

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