The Norfolk Southern Railway (reporting mark NS) is a Class I freight railroad in the United States. With headquarters in Norfolk, Virginia, the company operates 19,420 miles (31,250 km) route miles in 22 eastern states, the District of Columbia, and has rights in Canada over the Albany to Montréal route of the Canadian Pacific Railway, and previously on CN from Buffalo to St. Thomas. NS is responsible for maintaining 28,400 miles (45,700 km), with the remainder being operated under trackage rights from other parties responsible for maintenance. The most common commodity hauled on the railway is coal from mines in Indiana, Kentucky, Pennsylvania, Tennessee, Virginia, and West Virginia. The railway also offers the largest intermodal network in eastern North America. NS is a major transporter of domestic and export coal. The railway’s major sources of the mineral are located in: Pennsylvania’s Cambria and Indiana counties, as well as the Monongahela Valley; West Virginia; and the Appalachia regions of Virginia, Kentucky, and Tennessee. In Pennsylvania, NS also receives coal through interchange with R.J. Corman Railroad/Pennsylvania Lines at Cresson, Pennsylvania, originating in the “Clearfield Cluster”. NS’s export of West Virginia bituminous coal begins transport on portions of the well-engineered former Virginian Railway and the former N&W double-tracked line in Eastern Virginia to its Lambert’s Point coal pier on Hampton Roads at Norfolk. Coal transported by NS is thus exported to steel mills and power plants around the world. The company is also a major transporter of auto parts and completed vehicles. It operates intermodal container and TOFC (trailer on flat car) trains, some in conjunction with other railways. NS was the first railway to employ roadrailers (highway truck trailers with interchangeable wheel sets). Norfolk Southern is the namesake and leading subsidiary of Norfolk Southern Corporation, also based in Norfolk. Norfolk Southern Corporation was incorporated on July 23, 1980 in the Commonwealth of Virginia and is publicly traded on the New York Stock Exchange (NYSE) under the symbol NSC. The primary business function of Norfolk Southern Corporation is the rail transportation of raw materials, intermediate products, and finished goods across the Southeast, East, and Midwest United States. The corporation further facilitates transport to the remainder of the United States through interchange with other rail carriers while also serving overseas transport needs by serving several Atlantic and Gulf Coast ports. As of April 10, 2019, Norfolk Southern Corporation’s total public stock value was slightly over $51.6 billion.