However, U.S. Steel has not publicly committed to spending money at the Clairton plant to expand production, extend its life, improve efficiency, upgrade safety or reduce its polluting air emissions. Of the $14 billion, U.S. Steel has said $2.4 billion will go toward its Pittsburgh-area plants. A portion of that money will be spent on building a new hot strip mill to replace the one at its Irvin plant, just down the Monongahela River from Clairton, that processes steel into massive sheet rolls.
