February 2009 - U.S. Steel Corp., Pittsburgh, named Robert Y. Kopf III general manager of sales. Kopf replaces Don L. Cook Jr., who retired after 43 years with the company. Kopf is responsible for North American sales activities with flat-rolled products customers in the appliance, electrical, construction, sheet converter, tin and container markets. He reports to Joseph R. Scherrbaum Jr., vice president of sales and customer service for North American flat-roll operations.