User:Carwil/Pierina mine

The Pierina mine is an open-pit gold mine in Peru, located in the Jangas district, Huaraz Province, Ancash Region, 13 kilometers from the town of Jangas, at an altitude of 3,800 to 4,200m above sea level. It was operated by Barrick Gold Corporation from 1998 to July 2014 as an open-pit operation and has been in a formal stage of closure since, although the company planned to extract gold from the on-site rock in subsequent years. In 2009, it produced 8.42 million ounces of silver, making it Peru's fifth largest gold mine, after Yanacocha, Alto Chicama, Madre de Dios and Orcopampa. As of October 2017, El Comercio described the operations during the mine's "progressive closure" as a significant component of Peru's overall gold production.

The mine began production in 1998 and employed 440 workers, of which 98% are Peruvian. In addition, it provides work on a rotating basis to an average of 450 residents from neighboring communities who carry out complementary activities such as reforestation, erosion control, and development projects in their own communities.

As part of the mine's closure, Barrick reports that it has built two water treatment plants and a cyanide detoxification plant. Sulfur in the mined rock is expected to generate acid rock drainage, and the company is taking some steps to mitigate this hazard.
 * ISO 14001 - Certificación obtenida en 2004 para su sistema de gestión ambiental.