Buenavista mine represents one of the largest copper reserves in Mexico and in the world.

Ownership was handed over to the company CIA Minera de Cananea SA in 1971, which was majority controlled by the Mexican government.

[8] In August 2014, a major ecological disaster took place at the mine when 40,000 cubic meters of wastewater spilled into the Bacanuchi and Sonora rivers.

Mine officials have been criticized for not reporting the accident to the authorities until after 24 hours, when the residents had noticed the river water turned orange.

[9] In the wake of the disaster, Grupo México set up a $151 million clean up fund, while continuing operations.