Tenth Consecutive Quarter of Year-Over-Year Continuing Earnings GrowthJACKSONVILLE, Fla., July 17, 2012 /PRNewswire via COMTEX/ --Year-Over-Year Highlights: Operating income improves to $943 million Operating ratio improves to 68.7 percent Earnings per share increases to $0.49 per share Employee safety at all-time best levels CSX Corporation (NYSE: CSX) today announced second quarter net earnings of $512 million, or $0.49 per share, versus $506 million, or $0.46 per share, in the same period last year. This represents a 7 percent year-over-year improvement in earnings per share."CSX delivered its 10th straight quarter of year-over-year earnings growth despite si... More...