Compañía Minera Antamina is a polymetallic mining complex that contains one of the most important copper deposits in the world. The mine is located in the district of San Marcos, in the Ancash Region, in Peru, approximately 200 km from the city of Huaraz and at an average altitude of 4,300 m above sea level. They have a port, called Punta Lobitos, located in the coastal province of Huarmey. The company produces copper, zinc, bismuth and molybdenum concentrates and, secondarily, silver and lead at an open pit and is currently one of the largest Peruvian producers of copper and zinc concentrates and one of the ten largest mines in the world in terms of output.