# MACHINERY
> MSHA accident `220172280025` · 08/09/2017 · Martin Marietta Materials, Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck by... NEC
- **Occupation:** Electrician, Lineman
- **Activity:** Hand tools (powered)
- **Injury source:** HAND TOOLS,POWERED,NEC
- **Nature of injury:** FRACTURE,CHIP
- **Body part:** FINGER(S)/THUMB
- **Days lost:** 0
- **Mine experience:** 0.27 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials, Inc.
- **Mine:** [1300124](https://api.ai-analytics.org/mine/1300124)
## Narrative

EE was using a cordless drill and a 3/8 drill bit. EE was drilling a hole in a 1/8 inch thick aluminum mounting plate when the drill bit caught causing the drill to grab and twist in EE's hand.  

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