# SLIP OR FALL OF PERSON
> MSHA accident `220072120009` · 07/20/2007 · Tower Rock Stone Company
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Welder (shop)
- **Activity:** Walking, Running
- **Injury source:** STEPS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 1 years
## Operator
- **Controller:** Jay E  Luhr; Michael  Luhr
- **Operator:** Tower Rock Stone Company
- **Mine:** [2300781](https://api.ai-analytics.org/mine/2300781)
## Narrative

Miner was walking down steps at plant and slipped on a step.  Caught self on next step and twisted knee resulting in a knee strain which required an immobilizer.  This incident appears to have aggravated a documented pre-employment condition of this knee.

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