United States Steel Corporation (US Steel) has entered the execution phase of a $350 million replacement of blast furnace No. 14 at its Gary Works plant in Indiana, noting, “Something big is happening at Gary Works.”
The project involves furnace shutdown for approximately 100 days, a period that was originally disclosed in their third-quarter financial report, between May and August of this year. "The blast furnace restart line is expected to be completed next month," said Andrew Fulton, US Steel media relations representative.
To compensate for the loss of iron processing capacity during the shutdown, US Steel restarted blast furnace B at its Granite City Works plant in Illinois earlier this year, citing both the long shutdown at Gary Works and expectations of robust demand in 2026
Blast Furnace No. 14 is the largest of four blast furnaces at the Gary Works and produces pig iron for high-strength steel used in applications ranging from automobiles to buildings, using iron ore pellets supplied from US Steel plants in Minnesota.
The US Steel Board of Directors approved full funding for the relining last December, describing project as critical maintenance required to ensure Gary Works continues to meet its customer commitments and ensure the site's long-term iron smelting capabilities and capacity.
The redevelopment is part of a wider capital investment program at Gary Works.




