
The Biggest Nickel Producers - The Balance
Nov 20, 2019· Sumitomo Metal Mining Co. (SMM) is a subsidiary of the Sumitomo Group, one of Japan's largest keiretsu, or business enterprises. SMM is a major smelter and refiner of copper, nickel, and gold in Japan, and is invested in nickel mines and smelters in the Philippines, Indonesia
Read more