U.S. Steel is examining a consolidation of its North American flat-rolled operations and may temporarily idle its Granite City Works steelmaking operations and most finishing operations in Granite City, Ill. As the primary flat-roll supplier of Lone Star Tubular Operations, the consolidation is part of an on-going adjustment of steelmaking operations throughout North America to match customer demands. The potential consolidation is a result of continued challenging global market conditions. The company will continue to operate its steelmaking plants in Indiana, Michigan and Pennsylvania.