# SLIP OR FALL OF PERSON
> MSHA accident `220063530023` · 12/11/2006 · Cemex Inc
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Getting on or off equipment
- **Injury source:** STEPS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 39 years
## Operator
- **Controller:** Cemex S A
- **Operator:** Cemex Inc
- **Mine:** [0500344](https://api.ai-analytics.org/mine/0500344)
## Narrative

While at the top of the Alkali Fan Motor, the step down is slightly higher than the other steps going down.  Employee started down the first step and twisting his right knee.

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