Donald J. Nelson

Railroad Development Corp. provides railway management and investment services. It offers dispatching methodology, transportation, maintenance of way and other railroad operations, as well as various services from railways to transportation corridors, port facilities, transload facilities and fiber optics development. The company was founded in 1987 and is headquartered in Pittsburgh, PA.

Conrail, Inc. provides freight services. The company was founded in March 1993 and is headquartered in Philadelphia, PA.

Winchester Thurston School operates as a co-educational and college preparatory day school. It offers programs for academics, arts, and athletics. The company was founded in 1887 and is headquartered in Pittsburgh, PA.

The Hawthorne Group, Inc. operates an investment and management company. The company was founded by Thomas D. Wright and Henry Posner in 1987 and is headquartered in Pittsburgh, PA.

Hamburg - Köln - Express GmbH provides passenger rail transportation services. The private company is based in Cologne, Germany. The German company was founded in 2011. Carsten Carstensen has been the CEO of the company since 2009.

Part of Eurail Group GIE, Eurorail International NV provides business and management consulting services. The company is based in Aalst, Belgium. The CEOs are Henry Posner, Eric Debrauwere. The Belgian company was founded in 2006.

Vivarail Ltd. is a world leader in battery technology for rail applications. The private company is based in Southam, UK. Vivarail has built class 230 and class 484 trains, using a variety of power systems. Its first pure battery train was launched in 2018, and its next-generation train will be launched at the UN Climate Change Conference. Vivarail has sold trains to a number of UK-based operators and to Railroad Development Corporation as part of its export strategy. With the UK's first battery and battery hybrid trains fully approved for passenger service, Vivarail has proved its ability to deliver independently powered emission-free rolling stock. It means that an electrified network can be achieved without the need and expense of installing new catenary. As well as ensuring good quality existing rolling stock can be retained by converting to battery power – saving waste, energy, and resources while delivering a decarbonized railway. Founded in 2013, the British company has designed and developed emission-free traction systems based around flexible battery operation.