Cliffs US sales beat estimates, turns a profit in Q1

[caption id="attachment_823608" align="aligncenter" width="600"] Cliffs Northshore Mine | Copyright © 2011 Cliffs Natural Resources Inc.[/caption] Cliffs Natural Resources (NYSE:CLF), the largest U.S. iron ore producer, posted better-than-expected first-quarter earnings and sales, and said it continues to try selling its coal...