# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220053220035` · 09/29/2005 · Martin Marietta Aggregates
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Struck against stationary object
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Walking, Running
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 32
- **Mine experience:** 2 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Aggregates
- **Mine:** [1302290](https://api.ai-analytics.org/mine/1302290)
## Narrative

Employee was repairing a hose on the water truck. He turned around to get a wrench from the service truck, took a couple of steps, and apparently stepped on a rock and twisted his left knee, causing a sprain.

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