# HANDTOOLS (NONPOWERED)
> MSHA accident `220103570038` · 03/02/2010 · Lafarge Midwest Incorporated
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** HANDTOOLS (NONPOWERED)
- **Accident type:** Over-exertion NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Hand tools (not powered)
- **Injury source:** AXE,HAMMER,SLEDGE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 32 years
## Operator
- **Controller:** Lafarge S A
- **Operator:** Lafarge Midwest Incorporated
- **Mine:** [1400073](https://api.ai-analytics.org/mine/1400073)
## Narrative

Swinging a sledge hammer driving pins out of the primary crusher breaker chain - momentum twisted body around causing right knee to twist. Right after incident, EE reported feeing a ""pop"" sensation while walking. He rated pain 7 out of 10 but did not feel symptoms were serious & agreed to home care.  Symptoms worsened & he underwent microscopic surgery 12/17/2010.

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