U. S. Steel Restarts Granite City's Blast Furnace B

March 30, 2026

PITTSBURGH, March 30, 2026 - U. S. Steel successfully restarted Blast Furnace B at its Granite City Works facility in Granite City, Illinois. The facility is now producing steel, following the Company's previously announced plans to bring the furnace online to meet customer demand.

Driven by customer demand and as part of the Company's ordinary course of business planning, 
U. S. Steel began the process to restart the operation of one of two blast furnaces ("B") at Granite City Works in December 2025. As part of this restart, approximately 400 employees have been hired to support furnace operations.

"This restart reflects careful preparation and a focus on operating safely and reliably in a highly competitive and cyclical industry," said David B. Burritt, President and Chief Executive Officer of U. S. Steel. "As production resumes, our priority remains working closely with our employees, the United Steelworkers, and local leaders to support safe operations at the facility."

About U. S. Steel

Founded in 1901, U. S. Steel delivers profitable and sustainable steel solutions. Propelled by its talented employees and an unwavering focus on safety, U. S. Steel serves the automotive, construction, appliance, energy, containers, and packaging industries with high value-added steel products. Steel production begins with our competitively advantaged iron ore production capabilities which fuel our integrated steelmaking facilities and investments in electric arc furnaces. To help our customers create the best products with the fewest emissions, we are committed to reaching net-zero greenhouse gas emissions by 2050. U. S. Steel is at the forefront of creating steels that are stronger, lighter, and better for the environment. This includes our proprietary XG3® advanced high-strength steel, verdeX® steel produced with 70-80% lower CO2 emissions with a recycled content of up to 90%, and ultra-thin lightweight InduX™ steel for electric vehicles, generators, and transformers. U. S. Steel maintains operations across the United States and in Central Europe and is headquartered in Pittsburgh, Pennsylvania. For more information, please visit www.ussteel.com and follow U. S. Steel on LinkedIn, Instagram, Facebook, and X.