# SLIP OR FALL OF PERSON
> MSHA accident `220172480021` · 08/25/2017 · Knife River Corporation-Northwest
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Crusher attendant/operator, Pan feeder operator/worker
- **Activity:** Walking, Running
- **Injury source:** LOOSE DIRT AND MUD
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 0
- **Mine experience:** 1.19 years
## Operator
- **Controller:** MDU Resources Group Inc
- **Operator:** Knife River Corporation-Northwest
- **Mine:** [3503605](https://api.ai-analytics.org/mine/3503605)
## Narrative

Employee was walking by the mud pump and slipped in the mud, injuring lower back.

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