Monclova is a city located in the center of Coahuila, state located to the north of Mexico. Their conurbade area (Monclova, Frontera, Castanos) it counts with near 300,000 inhabitants and has population's of 35 hab/km² density

City highlighted by the biggest production in steel of all Mexico, of there the name of the Capital of the Steel
 

Been founded for the first time in 1577, like "Mines of the Trinidad", in their current location it was founded in 1689 as "Santiago of Monclova", old capital of the Novohispana country of the Nueva Extremadura, as well as of the old state of Coahuila-Texas; formed by the state of Coahuila in Mexico and the state of Texas, at the moment part of United States.

In 1942, is founded the Iron and steel industry Altos Hornos de Mexico (AHMSA) that originated the vertiginous industrial development of Monclova.