Activist hedge fund takes 5.2% of Cliffs Natural Resources, tells miner to spin off international assets

[caption id="attachment_769076" align="alignnone" width="600"] Cliffs Northshore MIne | Copyright © 2011 Cliffs Natural Resources Inc.[/caption] Activist hedge fund Casablanca Capital revealed on Tuesday that it has acquired 5.2% of iron ore miner Cliffs Natural Resources, making it one of the...