) today reported fourth-quarter and full-year results for the period ended Dec. 31, 2010. Consolidated fourth-quarter revenues were $1.4 billion, a 74% increase compared with $821 million in the same quarter last year. The increase was driven by higher sales volume and pricing due to greater exposure to seaborne markets and higher global demand for steelmaking raw materials. Consolidated operating income for the fourth quarter increased 155% to $397 million, from $156 million in the prior year's comparable quarter. Fourth-quarter 2010 net income increased 255% to $384 million, or $2.82 per diluted share, from $108 million, or $0.82 per diluted share, in the fourth quarter of 2009.