Pennsylvania, Steel and Coke Works
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Emergency responders are working to free people trapped under rubble at the Allegheny County plant, the Associated Press has reported.
The deadly blast at the U.S. Steel facility outside Pittsburgh was just the latest in a series of recent workplace accidents.
Timothy Quinn, 39, of East Huntingdon Township, also died in the incident. Ten other people were injured. Three of them are still hospitalized.
Allegheny County officials say two people are dead and ten others are injured, including two medics. WGAL News 8's Sarah Metts is live from the scene with the latest.