# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220071200039` · 03/14/2007 · US Silica Company
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Struck against stationary object
- **Occupation:** Barge/Boat/Dredge/Towbarge/Towboat/Leach operator, Riverman, Deck hand
- **Activity:** Getting on or off equipment
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 37
- **Mine experience:** 41.69 years
## Operator
- **Controller:** USS Holdings Inc
- **Operator:** US Silica Company
- **Mine:** [2800545](https://api.ai-analytics.org/mine/2800545)
## Narrative

Employee was dismounting the ladder on the 980G cat loader. When he stepped down, he stepped on a rock or clay ball causing his left knee to twist. He did not report this until the next day at 8:30 am 3/15/07. He was sent for Medical treatment and returned to work that same day.

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