# HANDLING OF MATERIALS
> MSHA accident `220090120013` · 01/06/2009 · Amrize Cement Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion in pulling or pushing objects
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Handling supplies or material
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** DISLOCATION
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 0.19 years
## Operator
- **Controller:** Holcim Ltd
- **Operator:** Amrize Cement Inc.
- **Mine:** [2300284](https://api.ai-analytics.org/mine/2300284)
## Narrative

EE was working hoisting a large valve from level 4 down to 3.  They were using a 10 ton chain hoist to lower and were using their legs to push the valve out to clear the handrail.  While pushing against the valve he felt his knee ""buckle"" from the pressure. Resulted in a dislocated knee cap.  Knee cap was manipulated back into place in the emergency room, resulted in a knee strain.

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