The Clairton Coke Works is considered the largest coking operation in North America and one of four major U.S. Steel plants in Pennsylvania.

CLAIRTON, Pa. (TNND) — An investigation is ongoing after two people were killed and 10 were injured in an explosion at a U.S.

The Clairton Coke Works is considered the largest coking operation in North America and one of four major U.S. Steel plants ...

Allegheny Health Network said it treated seven patients from the plant and discharged five within a few hours.

Two people were killed, 10 were treated for injuries in a hospital and many others were treated on the scene for more minor injures. Five of the 10 hospitalized were in "critical but stable" condition ...