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    Company Announcements

    October 22, 2026

    USS confirms nearly $3B for new Mon Valley HSM, targets 2029 production

    Written by Laura Miller

    U.S. Steel’s board of directors has approved a nearly $3 billion investment in a new hot strip mill (HSM) at the Edgar Thomson Plant, part of the Mon Valley Works outside Pittsburgh.

    The project confirms Nippon Steel’s commitment to modernize the Mon Valley HSM, a pledge made before and after its acquisition of U.S. Steel. It is part of Nippon’s broader $14 billion capital investment plan for the Pittsburgh-based steelmaker’s facilities.

    Laura Miller

    Laura Miller is a reporter and editor for Steel Market Update. She has held various editorial positions with steel industry publications, associations, and mills since 2007. She joined the SMU team in 2022. She is a member of the Association of Women in the Metal Industries and a past-president of the AWMI Pittsburgh Chapter. She holds a BA in Latin American Studies from Edinboro University of Pennsylvania.

    Read more from Laura Miller

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