# HANDLING OF MATERIALS
> MSHA accident `220231160035` · 04/24/2023 · Heidelberg Materials Midwest Agg, Inc.
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Machine maintenance
- **Injury source:** METAL COVERS & GUARDS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 0
- **Mine experience:** 0.67 years
## Operator
- **Controller:** Heidelberg Materials AG
- **Operator:** Heidelberg Materials Midwest Agg, Inc.
- **Mine:** [1500051](https://api.ai-analytics.org/mine/1500051)
## Narrative

An employee had an impactor liner, approximately 70 lbs, setting stationary on the impactor platform while changing worn curtain liners in the machine. The liner  became imbalanced and began to fall to the catwalk. The employee moved to reposition the liner but was unsuccessful causing a sprained lumbar in EE's lower right back area. 

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