# MACHINERY
> MSHA accident `220051100006` · 04/12/2005 · Alcoa Inc
## 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:** 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:** CUT,LACER,PUNCT-OPN WOUND
- **Body part:** HAND (NOT WRIST OR FINGERS)
- **Days lost:** 0
- **Mine experience:** 16.58 years
## Operator
- **Controller:** Alcoa Inc
- **Operator:** Alcoa Inc
- **Mine:** [4100356](https://api.ai-analytics.org/mine/4100356)
## Narrative

A Mine Mechanic was using a 3/4 in impact wrench to loosen bolts on the brake assembly of a Cat 776 Hauler Trailer.  The bolt broke loose suddenly and the resulting motion of the impact pinned the mechanics hand against the rear side of the assembly resulting in a laceration requireing 6 stitches.

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