# SLIP OR FALL OF PERSON
> MSHA accident `220132060019` · 06/25/2013 · Martin Marietta Northern California Aggregates,LLC
## 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:** Walking, Running
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 7.46 years
## Operator
- **Controller:** Heidelberg Materials AG
- **Operator:** Martin Marietta Northern California Aggregates,LLC
- **Mine:** [0400159](https://api.ai-analytics.org/mine/0400159)
## Narrative

Walking on an uneven surface while performing a pre-task inspection, left knee hyper-extended as he strode and hit a depression.

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