# SLIP OR FALL OF PERSON
> MSHA accident `220121300025` · 05/07/2012 · Arrowhead Materials
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Assayer, Geologist, Metallurgist, Engineer, Engineer management
- **Activity:** Inspect equipment or mine
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 4
- **Mine experience:** 8 years
## Operator
- **Controller:** McCormick Inc
- **Operator:** Arrowhead Materials
- **Mine:** [0202135](https://api.ai-analytics.org/mine/0202135)
## Narrative

Employee slipped when stepping off the lower rung of ladder when checking belt line conveyor. The slip happened at ground level causing employee to twist knee.

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