# HANDLING OF MATERIALS
> MSHA accident `220111240032` · 04/25/2011 · Knife River Corporation-Northwest
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion in lifting objects
- **Occupation:** Pumper
- **Activity:** Handling supplies or material
- **Injury source:** BAGS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 298
- **Mine experience:** 4.92 years
## Operator
- **Controller:** MDU Resources Group Inc
- **Operator:** Knife River Corporation-Northwest
- **Mine:** [3503605](https://api.ai-analytics.org/mine/3503605)
## Narrative

Lifted 55lb bag of chemicals into hopper and felt pain in back when powder started coming out because powder weight shifted.

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