# SLIP OR FALL OF PERSON
> MSHA accident `220161600010` · 03/03/2016 · Keystone Cement Company 
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **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:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 91
- **Mine experience:** 26.6 years
## Operator
- **Controller:** Cementos Portland Valderrivas S A
- **Operator:** Keystone Cement Company 
- **Mine:** [3600125](https://api.ai-analytics.org/mine/3600125)
## Narrative

Supervisor was walking at ground level of kiln pier, EE slipped on unpaved surface twisting right knee. Slight tear to right ACL occurred. This accident became reportable on 05/31/2016 when employee had surgery on right knee. 

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