# STRIKING OR BUMPING
> MSHA accident `220163280015` · 11/09/2016 · Hawaiian Cement
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** STRIKING OR BUMPING
- **Accident type:** Struck against stationary object
- **Occupation:** Electrician, Lineman
- **Activity:** Walking, Running
- **Injury source:** LADDERS,NEC
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 66
- **Mine experience:** 1.54 years
## Operator
- **Controller:** MDU Resources Group Inc
- **Operator:** Hawaiian Cement
- **Mine:** [5100036](https://api.ai-analytics.org/mine/5100036)
## Narrative

Was walking on work platform stepped around a ladder and hit back on the stair railing causing employee to jump forward out of reflex and hit knee on the side of ladder.  Foot hit bottom of stairs resulting in employee twisting knee.

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