# SLIP OR FALL OF PERSON
> MSHA accident `220072250012` · 08/07/2007 · Hecla Greens Creek Mining Company
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall to the walkway or working surface
- **Occupation:** Laborer, Bull gang, Faceman, Parts runner, Roustabout, Roof trimmer/scaler
- **Activity:** Drill face, Rib, Side, Down
- **Injury source:** MINE FLOOR,BOTTOM,FOOTWAL
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 10
- **Mine experience:** 1.46 years
## Operator
- **Controller:** Rio Tinto Group
- **Operator:** Hecla Greens Creek Mining Company
- **Mine:** [5001267](https://api.ai-analytics.org/mine/5001267)
## Narrative

Employee stepped on rock while using jackleg. When he stepped on the rock his foot slipped off causing his knee to buckle under. The employee fell with all his weight on his left knee. This caused a medial collateral to his knee.

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