Large-scale integrated zinc producer Nexa Resources S.A. (Nexa) is a Brazilian metal mining company, formerly known as Votorantim Metals. The company is part of the local Votorantim group, and it owns and operates three underground mines in Peru, and two in Brazil's Minas Gerais state, that extract zinc, copper and lead. Nexa also operates two smelters in Brazil and one in Peru, which produce special high-grade zinc, zinc oxide, agricultural lime powder Zincal 200, and the zinc-aluminum, magnesium, and copper alloy Zamac. The miner also has eight greenfield projects in these two countries, including some silver and gold deposits. The firm was founded in 1956 as Companhia Mineira de Metais and is headquartered in São Paulo city, with business offices in Peru, Luxembourg, and United States.