# MACHINERY
> MSHA accident `220111440007` · 05/21/2011 · Luminant Mining Company LLC 
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **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:** WRENCH
- **Nature of injury:** CUT,LACER,PUNCT-OPN WOUND
- **Body part:** UPPER ARM/HUMERUS
- **Days lost:** 0
- **Mine experience:** 31.52 years
## Operator
- **Controller:** Energy Future Holdings Corporation
- **Operator:** Luminant Mining Company LLC 
- **Mine:** [4102632](https://api.ai-analytics.org/mine/4102632)
## Narrative

The mechanic was adjusting the drag brakes in preparation for lowering the dragline boom.  The employee was using a one inch drive impact wrench with a 2.25 inch socket to compress the brakes spring.  As he was tightening the spring nut, the socket broke apart causing a laceration to the employee's upper right arm.  Six sutures were required to close the wound.

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