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Nexa Resources SA operate large-scale, mechanized underground and open pit mines, as well as smelters. The company operates through two segments namely Mining and Smelting. Its Mining segment consists of various operating units includes mineral exploration activities and the production of zinc concentrates, copper concentrates and concentrates. The Smelting segment comprises operating units which include facilities recovering and refining zinc metal out of feed materials such as zinc concentrates or secondary feed materials. It generates maximum revenue from the Smelting segment. Geographically It has a presence in Brazil, Peru, the United States of America, Switzerland, Japan, Argentina, South Korea, Colombia, Vietnam, Malaysia and other countries.

BHP is a global diversified miner mainly supplying iron ore and copper. The merger of BHP Limited and Billiton PLC created the present-day BHP Group. The dual-listed structure from the 2001 BHP and Billiton merger was collapsed in 2022. Major assets include Pilbara iron ore and Escondida copper. Onshore US oil and gas assets were sold in 2018, and the remaining petroleum assets were spun off and merged with Woodside in 2022, with BHP vesting the Woodside shares it received to BHP shareholders. It purchased copper miner Oz Minerals in fiscal 2023 and half of the Vicuña copper joint venture in fiscal 2025. It is entering the potash market through the development of its Jansen project in Canada. However, due to low prices, BHP placed its nickel business on care and maintenance in 2024.