Historical Pro Forma Years Ended December 31, Nine MonthsEndedSeptember 30, Year EndedDecember 31,2011 Nine MonthsEndedSeptember 30,2012 2011 2010 2009 2012 2011 (Dollars in millions, except per unit and per ton data) Income Statement Data: Revenues Sales and other operating revenue $ 449.8 $ 360.7 $ 308.7 $ 554.0 $ 309.7 $ 449.8 $ 554.0 Costs and operating expenses Cost of products sold and opera