The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation ...

The deadly explosion at Clairton Coke Works near Pittsburgh occurred when a gas valve was flushed before planned maintenance, ...

The plant, a massive industrial facility along the Monongahela River south of Pittsburgh, is considered the largest coking ...

The Barronvale Covered Bridge stretches its wooden frame across Laurel Hill Creek like a crimson ribbon tied around Pennsylvania’s most picturesque gift. Dating back to 1830, this wooden wonder has ...

HARRISBURG, Pa. (AP) — The fatal explosion last week at U.S. Steel’s Pittsburgh-area coal-processing plant has revived debate ...