# SLIP OR FALL OF PERSON
> MSHA accident `220091110038` · 04/07/2009 · Martin Marietta Materials 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:** MACHINE,NEC-WELDR,OFC MAC
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 0.15 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials Inc
- **Mine:** [4608862](https://api.ai-analytics.org/mine/4608862)
## Narrative

Employee was installing cab protection guards. He was getting down from upper deck and slipped twisting his right knee and overextending it. The entire machine had a thin layer of ice on it, including the sheet metal on it.

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