# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220063410003` · 11/27/2006 · Martin Marietta Materials Southwest Ltd
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Struck against stationary object
- **Occupation:** Warehouseman, Bagger, Palletizer/Stacker, Store keeper, Packager, Fabricator, Cleaning plant operator
- **Activity:** Walking, Running
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 10.35 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials Southwest Ltd
- **Mine:** [4101335](https://api.ai-analytics.org/mine/4101335)
## Narrative

As the employee was walking towards the plant stairs, he twisted his right knee as he lost his footing on the large rock  material that was laying on the ground.  This caused a strain to his right knee.

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