# SLIP OR FALL OF PERSON
> MSHA accident `220101550004` · 05/25/2010 · U.S. Silica Company, LLC
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Electrician, Lineman
- **Activity:** Handling supplies or material
- **Injury source:** STEPS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 36
- **Mine experience:** 28.54 years
## Operator
- **Controller:** USS Holdings Inc
- **Operator:** U.S. Silica Company, LLC
- **Mine:** [3400377](https://api.ai-analytics.org/mine/3400377)
## Narrative

Employee was traveling down a stairway when he stumbled on the bottom step. He twisted his Left Knee as he caught his balance.

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