Local environmental groups in Western Pennsylvania say Nippon Steel’s purchase of U.S. Steel should lead to cleaner ...

President Donald Trump spoke at the U.S. Steel plant in West Mifflin on Friday. During the event, Trump announced the tariff on imported steel will double to 50%.

Cleveland-Cliffs Inc. on Monday announced it would open a state-of-the-art plant to build electrical distribution transformers at an idled steel plant in Weirton, West Virginia.

Ultimately, this would lead U.S. Steel to close the Mon Valley plant — the last steelmaking operation in Pittsburgh — and move its headquarters down south to follow the rest of its operations.

President Donald Trump was joined on stage by Pittsburgh Steelers players during his speech at the U.S. Steel plant in West Mifflin, Pennsylvania, Friday. Steelers quarterback Mason Rudolph ...

New female in U.S. Steel bald eagle nest lays 1st egg of season 03:23. On this Valentine's Day, there's big drama at a beloved Pittsburgh-area bald eagle nest.

CEO David Burritt said the sale would allow US Steel to invest in updating its older mills in Gary, Ind., and its Mon Valley Works plant near Pittsburgh.

Ultimately, this would lead U.S. Steel to close the Mon Valley plant — the last steelmaking operation in Pittsburgh — and move its headquarters down south to follow the rest of its operations.