July 29, 2011, CLEVELAND, (Coal Geology) - Cliffs Natural Resources Inc. (NYSE: CLF) (Paris: CLF) has reported second-quarter results for the period ended June 30, 2011. Consolidated revenues were up 52% for the second quarter to a record $1.8 billion, from $1.2 billion in the same quarter last year. Operating income for the second quarter was $617 million, an increase of 69% [...]



