# SLIP OR FALL OF PERSON
> MSHA accident `220172500028` · 08/31/2017 · Columbia River Carbonates
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Prep plant foreman, Supervisor, Mill plant supervisor, Kiln supervisor
- **Activity:** Walking, Running
- **Injury source:** STAIRS,STEPS-OUTSIDE
- **Nature of injury:** UNCLASSIFIED,NOT DETERMED
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 17.37 years
## Operator
- **Controller:** Northwest Carbonates; Bleeck Management
- **Operator:** Columbia River Carbonates
- **Mine:** [4503286](https://api.ai-analytics.org/mine/4503286)
## Narrative

Miner was descending stairs on the outside of the Roller Mill Building when miner heard a loud popping sound and felt intense pain in right knee. 

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