# HANDLING OF MATERIALS
> MSHA accident `220072610021` · 08/17/2007 · Prairie Material Sales, Inc. - Aggregate Division
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion in lifting objects
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Machine maintenance
- **Injury source:** METAL COVERS & GUARDS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 31
- **Mine experience:** 7 years
## Operator
- **Controller:** Prairie Group
- **Operator:** Prairie Material Sales, Inc. - Aggregate Division
- **Mine:** [1101133](https://api.ai-analytics.org/mine/1101133)
## Narrative

Laborer was working on screen deck and twisted right knee while lifting screen.

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