Companies in the Railroads industry operate railroad tracks and/or trains, as well as transport cargo and passengers. These corporations are generally established and stable, and offer lower-than-average dividend yields. Today, Stock-Callers.com reviews the following equities: CSX Corp. (NASDAQ: CSX), Union Pacific Corp. (NYSE: UNP), Westinghouse Air Brake Technologies Corp. (NYSE: WAB).   Jacksonville, Florida-based CSX…