# MACHINERY
> MSHA accident `220122410012` · 07/21/2012 · Progress Coal 
## 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:** CHEST (RIBS/BREAST BONE/CHEST ORGNS)
- **Days lost:** 0
- **Mine experience:** 4 years
## Operator
- **Controller:** Alpha Natural Resources, Inc.
- **Operator:** Progress Coal 
- **Mine:** [4608645](https://api.ai-analytics.org/mine/4608645)
## Narrative

Utilizing 1"" air operated impact wrench EE was tightening fasteners on the right hand spindle assembly of a Komatsu 930E Haul Truck. EE felt a searing pain in his abdomen possible hernia

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