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Company History: Grupo Mexico, S.A. de C.V. is Mexico’s largest mining company and the world’s third largest producer of copper, fourth largest of silver, and fifth largest of zinc. It also engages in the mining and processing of other minerals, principally gold, lead, and molybdenum. In addition to its holdings in Mexico, Grupo Mexico owns ASARCO, Inc., a company with many mining facilities in the United States and a majority stake in Southern Peru Copper Corporation Grupo Mexico also holds the majority share in Mexico’s longest railway.
Under U.S. Ownership: 1892-1965
Grupo Mexico originated not with a Mexican company but with the activities of the Guggenheim family of the United States, through their M. Guggenheim’s Sons partnership, which had been investing in U.S. mining and smelting operations since 1880. In 1889 Simon Guggenheim persuaded some Mexican mine owners to send their silver ores to the Guggenheim smelter in Pueblo, Colorado. After Congress imposed a heavy duty on imported ores the following year, the Guggenheims established smelters in Monterrey (1892) and Aguascalientes (1895) and first leased, then bought, mines in Mexico yielding lead, iron, silver, and copper.
By 1901 Guggenheim-owned smelters were processing 40 percent of the lead and 20 percent of the silver mined in Mexico. Meanwhile, industrialists in the United States were forming a cartel-like trust of large smelting operations, founded in 1899 as the American Smelting and Refining Co. (ASARCO).