new arrangements applied from 1998; by then FNM ceased to be the administrator of most of its major railway routes. The companies were Kansas City Southern de Mexico, Ferromex, Ferrosur, and (owned jointly by the three companies) Ferrocarril y Terminal del Valle de México or Ferrovalle which operates railroads and terminals in and around Mexico City. It was not until June 4, 2001, during Vicente Fox's presidency that FNM as an organization was officially extinguished, as confirmed by a publication in Mexican Official's Gazette. FNM will continue to exist legally as a state-owned shell entity (as Ferrocariles Nacionales de México en Liquidación) until the conclusion of the liquidation process. , FNM en Liquidación still owns some lines (23% of which are shortline railroads) where concessions cannot be granted or are considered to be of importance for the national economy, such as the Trans-Istmico, which goes from Salina Cruz, Oaxaca to Coatzacoalcos, Veracruz, although their direct operations are contracted to private companies. Since 2012, FNM en Liquidación as well as its associated liquidation process and settlement of existing liabilities has been headed by an undersecretariat of the Secretariat of Communications and Transportation (SCT). Locomotives During the days of steam locomotives, N de M was best known for operating Niágara class locomotives, which took their name from the New York Central Railroad locomotives of the same wheel configuration. It was also the home of several narrow gauge systems that used steam, both nationally and regionally. N de M was one of the few railroads outside the US to purchase new diesel locomotives from Baldwin Locomotive Works: the only three "Baldwin E-units" ever built (DR-6-4-2000), the DR-12-8-1500/2 and the AS-616. Two of the three DR-6-4-2000 locomotives had been on major railroads in the United States on a demonstration tour in 1945. N de M bought them in August 1945 and ordered a third in August 1946. All three consistently broke down and were retired soon after their factory warranties expired and were scrapped in September 1957. They do not appear on the 1958 N de M locomotive roster, and sat for years in the scrapyard at San Luis Potosí. Notes in the FNM archives in Puebla, Mexico describe how one of these locomotives had a wheel disintegrate at high speed, and also how the Centipede locomotives were delivered in 1948 with parts missing. In Acámbaro, Guanajuato, N de M operated one of the