# MACHINERY
> MSHA accident `220090500015` · 01/02/2009 · Sherwin Alumina Company, LLC
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** MACHINERY
- **Accident type:** Over-exertion NEC
- **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:** SPRAIN,STRAIN RUPT DISC
- **Body part:** FOREARM/ULNAR/RADIUS
- **Days lost:** 0
- **Mine experience:** 18.04 years
## Operator
- **Controller:** Glencore International A G
- **Operator:** Sherwin Alumina Company, LLC
- **Mine:** [4100906](https://api.morvs.ai/mine/4100906)
## Narrative

Employee was removing bolts from a flange.  He was operating an air operated impact tool with right hand while holding back-up wrench with left hand.  The socket bounced off the nut and twisted his forearm.

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