# MACHINERY
> MSHA accident `220050130020` · 10/13/2004 · Thomas E Siegel
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Over-exertion NEC
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Machine maintenance
- **Injury source:** CRANES,DERRICKS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** TRUNK,NEC
- **Days lost:** 21
- **Mine experience:** 3 years
## Operator
- **Controller:** Thomas E  Siegel
- **Operator:** Thomas E Siegel
- **Mine:** [3608416](https://api.ai-analytics.org/mine/3608416)
## Narrative

Installing bottom rollers on D9H, Injured was balancing installation tool.  Employee running service truck crane lowered tool causing opposite end to rise quickly, which was being held by injured causing twist.

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