# MACHINERY
> MSHA accident `220182390018` · 08/14/2018 · Knife River Corporation-Northwest
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** MACHINERY
- **Accident type:** Over-exertion NEC
- **Occupation:** Barge/Boat/Dredge/Towbarge/Towboat/Leach operator, Riverman, Deck hand
- **Activity:** Barge, Boat, Dredge
- **Injury source:** BLDG,STRUCT,BOAT,RAFT,NEC
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 0
- **Mine experience:** 7.15 years
## Operator
- **Controller:** MDU Resources Group Inc
- **Operator:** Knife River Corporation-Northwest
- **Mine:** [3502968](https://api.ai-analytics.org/mine/3502968)
## Narrative

ON 8/16/18, MINER REPORTED EXPERIENCING SEVERE BACK PAIN AFTER SITTING IN A CHAIR WHILE OPERATING THE DREDGE ON 8/14/18, FOLLOWED BY A 12 HR SHIFT PERFORMING MAINTENANCE ON 8/15/18. MINER INITIALLY REPORTED TO SUPERVISOR AND A GROUP OF MORE THAN FIVE OTHER MINERS THAT BACK PAIN WAS NOT RELATED TO WORK CONDITIONS.

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