Irene Florencia Letts Colmenares de Romaña

Carnegie Mellon University is an American school that operates as a college or university. It is located in Pittsburgh, Pennsylvania.

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.

Iowa Interstate Railroad Ltd. provides railroad dispatching and transportation services. It provides train service between Chicago, Illinois and Omaha, Nebraska. The firm's services also include industrial switching, transload services and intermodal capabilities. It also transports agricultural products, steel, scrap, appliances, intermodal containers and trailers, chemicals and forest products. Iowa Interstate Railroad was founded in 1984 and is headquartered in Iowa City, IA.

Red Eléctrica del Sur SA provides electricity transmission services. The firm's service areas include the cities of Arequipa, Moquega, Tacna, and Puno. It also offers power grid-integrated fiber optic communication services. The company was founded on February 16, 1999 and is headquartered in Lima, Peru.

AC Capitales Safi SA (AC Capitales) is the fund management subsidiary of Peru-based Grupo APOYO SA, founded by Felipe Ortiz de Zevallos in 1977 to offer specialized information and knowledge to their clients' entrepreneurial or institutional decisions. Established in 2002, AC Capitales is a leading asset management firm which aims to provide asset management services and generate long-term asset management relationships for their investee companies. The firm is based in Lima and manages the Multi-Rent Real Estate Investment Fund, Public Service and Natural Resource Investment Fund and the Agroindustrial and Forestry Development Investment Fund.

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.

Proyectos Médicos Sanitarios Integrales SL is a Spanish company that operates a testing laboratory. Part of Grupo Taper SA, the company is based in Toledo, Spain. Proyectos Médicos Sanitarios Integrales SL was acquired by Grupo Taper SA on September 16, 2007.

Marinasol Holding Plc engages in investing in agriculture business and shrimp farming. It offers blueberries, avocados, tangerines, grapes, and mangoes. The company was founded in 1997 and is headquartered in Lima, Peru.

Tecnofil SA engages in the manufacture of billets of copper and zinc alloys for industries and galvanized injection. Its products include copper wire, bus bar, flat wire, and bars; brass wire; phosphorus bronze wire; silicon bronze wire; and EDM wire. The company was founded on April 4, 1975 and is headquartered in Independencia, Lima Perú.

Rash Peru SAC operates electronic stores. It engages in the importation and distribution of security systems, phone articles, audio, video, and communication in general. The company was founded in 1995 and is headquartered in Lima, Peru.

Part of Inversiones JRPR SA, Vigilancia Andina SA is a Peruvian company that provides security and investigation services. The company is based in Lima, Peru.

Compañía Eléctrica el Platanal SA is a carbon-neutral energy generation and commercialization company based in La Victoria, Peru. Compañía Eléctrica el Platanal SA is committed to environmental sustainability and has designed a policy that emphasizes the prevention and mitigation of environmental impacts. The Peruvian company supports conservation projects for water resources and green infrastructure. Compañía Eléctrica el Platanal SA manages natural resources responsibly to contribute its energy potential to the National Interconnected Electric System (SEIN). The private company was founded by Jose Jaime Rizo Patrón Remy and is currently led by CEO Eduardo Herrera Vasquez.

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.