CLAIRTON, Pa. (AP) — For Don Furko, Aug. 11, 2025, was a normal shift. Until it became the shift he would never forget. At 10:47 a.m., U.S. Steel’s Clairton Coke Works outside Pittsburgh — a sprawling riverside industrial facility and the largest of its kind in the Western Hemisphere — erupted in an ear-piercing boom. A steelworker for 25 years and former Clairton local union president, Furko pulled on flame-retardant jacket and pants, a hard hat and safety glasses, left his post and rushed to