Ing. Ariel Nieto & Consultores Asociados, society which was formally constituted the 11th of October 1991 by Eng. Ariel Nieto and Eng. Ramón Díaz. Lately, in July of 1994, Eng. Díaz sold his share of the society (10%) to Eng. Nieto. The 10th of July of 1995 María José Nieto acquired a 5% of the society and the 15th of July Rodrigo José Nieto acquired 5% of the society which he lately sold to María José Nieto on November of 2000. A number of consulters, specialists in diverse fields, are related to the firm, and contribute regularly in different projects, given their specialty. They are civil engineers specialized in hydraulics, structures and transportation; industrial engineers, architects, urbanists, surveyors, economists and environmentalists. There is also the possibility to count with specialized technical assistance for projects of great magnitude. The firm sustains close links with specialists and enterprises of the region, either related to engineering or to privatizations and concessions of national or regional projects. The firm counts with the technical expertise necessary to achieve all the tasks for which services are offered.