Buenavista mine
The Buenavista mine, historically known as the Cananea copper mine, is a large open pit copper mine located in the north-west of Mexico in Cananea, Sonora. It lies south of the international border near Nogales, Arizona. Buenavista mine represents one of the largest copper reserves in Mexico and in the world. As of 2013, it had estimated reserves of 36 million tonnes of ore grading 0.69% copper, 3.3% zinc and 33.4 million oz of silver. Cananea represents one of the largest copper reserves in Mexico and in the world, having estimated reserves of 4.52 billion tonnes of ore with a grade of 0.42% copper. History Greene Consolidated Copper Company (1896-1907) Copper has been mined at the site continuously as far back as 1899. The mine was originally owned by the American businessman William Cornell Greene. The mine was the location of the Cananea strike in 1906. Anaconda Copper (1907-1972) The mine was run for some time by the American company Anaconda Copper. Government of Mexico (1972-1990) The Mexican government mandated that ownership of the mining sector be gradually put into Mexican hands in 1961. Ownership was handed over to the company CIA Minera de Cananea SA in 1971, which was