# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220143080022` · 10/24/2014 · Hanson Aggregates LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Struck against stationary object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Machine maintenance
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** ANKLE
- **Days lost:** 0
- **Mine experience:** 1.56 years
## Operator
- **Controller:** Heidelberg Materials AG
- **Operator:** Hanson Aggregates LLC
- **Mine:** [3401474](https://api.ai-analytics.org/mine/3401474)
## Narrative

Employee was cleaning cat walk on Primary Screen when he stepped on rock twisting his right ankle, causing ligaments on top of foot to swell.

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