See photos of how RIDC has transformed former steel sites into tech and industrial centers over its 70-year history.

US Steel warned that it would be forced to close its Pittsburgh mill and move its headquarters if the sale is blocked. NurPhoto via Getty Images Nippon and US Steel make most of their steel from ...

Gone are the 20 or so miles (32 kilometers) of contiguous iron and steel mills from downtown Pittsburgh and up the Monongahela River that helped the U.S. industrialize and wage wars.

FILE - The United States Steel Mon Valley Works Clairton Plant in Clairton, Pa., is shown on Monday, Feb. 26, 2024. Generations of Pittsburgh residents have worked at steel mills, rooted for the ...

Skilled steel workers at the Homestead mills were part of the Amalgamated Association of Iron and Steel Workers, which, by the late 1800s, had negotiated and fought for some of the best wages and ...

Within 20 years of U.S. Steel’s christening, Pittsburgh mills were producing one-third of the steel ... A hot stove’s checker-brick interior literally would glow as it heated to 1,800 degrees ...

Gone are the 20 or so miles of contiguous iron and steel mills from downtown Pittsburgh and up the Monongahela River that helped the U.S. industrialize and wage wars.

Pittsburgh's most storied steel company, U.S. Steel, is on the cusp of being bought by Japanese steelmaker Nippon Steel Corp. in a deal that's kicking up an election year political maelstrom.

Gone are the 20 or so miles (32 kilometers) of contiguous iron and steel mills from downtown Pittsburgh and up the Monongahela River that helped the U.S. industrialize and wage wars.

PITTSBURGH (AP) — Generations of Pittsburghers have worked at steel mills, rooted for the Steelers or ridden the rollercoaster at Kennywood amusement park, giving them a bird’s eye view of the ...

Associated Press PITTSBURGH (AP) — Generations of Pittsburghers have worked at steel mills, rooted for the Steelers or ridden the rollercoaster at Kennywood amusement park, giving them a bird ...

PITTSBURGH (AP) — Generations of Pittsburghers have worked at steel mills, rooted for the Steelers or ridden the rollercoaster at Kennywood amusement park, giving them a bird’s eye view of the ...