By Marialuisa Rincon

May 4, 2025 - Integrated steelmaker Cleveland-Cliffs will indefinitely idle its Conshohocken, Riverdale, and Steelton steel mills this summer in response to weak demand for the products produced at the mills.

The idlings will impact about 950 workers spread across the 700,000 short ton (st)/yr Riverdale high-carbon coil mill in Illinois, the 500,000st/yr Conshohocken specialty plate mill in Pennsylvania and the 300,000st/yr Steelton, Pennsylvania railroad rail mill, a company spokesperson told Argus.

Cliffs said the moves are temporary and will begin at the end of the required 60-day WARN notice periods in their respective states — on or about 30 June.