# FALLING/SLIDING/ROLLING MATERIALS
> MSHA accident `220091410014` · 05/19/2009 · River Cement Company dba Buzzi Unicem USA
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** FALLING/SLIDING/ROLLING MATERIALS
- **Accident type:** Fall to lower level, NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Surface construction, NEC
- **Injury source:** FLOOR,WALKING SURF-NOT UG
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 0.13 years
## Operator
- **Controller:** Buzzi S p A
- **Operator:** River Cement Company dba Buzzi Unicem USA
- **Mine:** [2300188](https://api.ai-analytics.org/mine/2300188)
## Narrative

Employee stated that he was working on top of the 3000 ton silo.  Above him about 10 feet was a 5 pound wedge that came loose as they were doing an allignment.  The wedge fell and struck employee in the right shoulder causing him to loose balance and fall.  Just after the incident employee complained of right knee swelling.

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