“Pressure built inside the valve, leading to valve failure and coke oven gas filling the area and ultimately exploding when ...

The preliminary findings say how the company believes the explosion occurred. A union statement cautioned the investigation is in its early stages.

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

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 ...