US Steel Restarts Blast Furnace No. 14 After $350 Million Gary Works Reline

US Steel has returned Blast Furnace No. 14 at its Gary Works facility in Indiana to service following a major $350 million reline project. The upgrade required around one million labour hours and involved replacing the furnace’s refractory lining, restoring critical systems and carrying out extensive maintenance on supporting infrastructure. At peak activity, nearly 1,000 contractors were working on the site each day. Blast Furnace No. 14 has an annual production capacity of approximately 2 million tonnes and is the largest blast furnace operating at Gary Works. The reline is expected to strengthen the plant’s long-term ironmaking capabilities and support continued production of American-made steel. US Steel said the investment reflects its focus on improving operational competitiveness, safety and manufacturing reliability. The restart also supports the company’s ability to serve steel customers across key US industries while reinforcing Gary Works’ position as an important domestic steelmaking facility.