# SLIP OR FALL OF PERSON
> MSHA accident `220202310011` · 08/14/2020 · Cleveland-Cliffs Minorca Mine Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Driller, Highwall operator, Highwall drill operator
- **Activity:** Walking, Running
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 26.5 years
## Operator
- **Controller:** ArcelorMittal USA LLC
- **Operator:** Cleveland-Cliffs Minorca Mine Inc.
- **Mine:** [2102449](https://api.ai-analytics.org/mine/2102449)
## Narrative

The employee was walking around the drill when their footing slipped on burden, twisting the knee.  Lighting, weather, and uneven ground are the root cause of the injury.

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