In 1960, the smelter increased its capacity to 2 million tons of liquid steel per year, with this being consolidated as the largest company industry in Latin America.

He orchestrated one of the largest scams in Mexican history and was subsequently arrested by Interpol on charges of fraud, corruption, and money laundering.

[2] In April 2023, Ancira was ousted from the presidency of AHMSA, which is now in the hands of Argentem Creek Partners, an American fund that is facing the challenge of reviving a company on the brink of collapse.

[4][5] Alonso Ancira Elizondo, the former president of AHMSA from 1991-2023, is known for leading one of the largest scams in the history of Mexico, defrauding the Mexican government of $500 million.

He is responsible for his involvement in the Pemex, Agro Nitrogenados, and Odebrecht frauds, as well as his mismanagement that led to the bankruptcy of Altos Hornos de México (AHMSA).

In 2004, he and his family members were charged with tax fraud in Mexico, prompting them to flee the country after arrest warrants were issued by the Attorney General's Office (PGR).

[12][13] Ahmsa’s main steelmaking facilities and corporate offices are located in Monclova, Coahuila, close to transportation lines, raw materials supplies, principal points of export, and the company’s major domestic markets.

AHMSA operates at an annual production rate of 3.5 million metric tons of liquid steel, with a workforce of 22,250 people, including its subsidiary companies.