# Mine accident
> MSHA accident `220030630021` · 02/24/2003 · Buzzi Unicem USA 
## Details
- **Degree of injury:** —
- **Classification:** —
- **Accident type:** No Value Found
- **Occupation:** —
- **Activity:** —
- **Injury source:** CHAIN HOIST, CHAIN BLOCK
- **Nature of injury:** —
- **Body part:** —
- **Days lost:** 0
- **Mine experience:** — years
## Operator
- **Controller:** Buzzi S p A
- **Operator:** Buzzi Unicem USA 
- **Mine:** [3600006](https://api.ai-analytics.org/mine/3600006)
## Narrative

CHANGING DISCHARGE SCREENS INSIDE #5 BALL MILL. WASHER WAS WELDED TO NEW SCREEN AND ANOTHER WASHER WELDED TO SCREEN ABOVE. CONNECTED TO EACH OTHER BY CHAIN HOIST TO LIFT SCREEN INTO POSITION. WHILE LIFTING AND PUSHING SCREEN INTO PLACE, THEUPPER WELD BROKE, AND THE CHAIN HOIST FELL KNOCKING EMP HARD HAT OFF AND STRIKING HIM ON THE HEAD.

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