Línea Coahuila Durango  The Línea Coahuila Durango  is a short-line railroad company operating between the states of Durango and Coahuila in Mexico. It was created as a freight railroad company when the Ferrocarriles Nacionales de Mexico was privatized between 1997 and 1998. It started operations on 27 April 1998. The concession to run the company was purchased by a joint venture including Altos Hornos de Mexico and Peñoles. Control of the company is now in the hands of Industrias Peñoles.