MMX is a Brazilian iron ore mining company with operations in Minas Gerais and Mato Grosso do Sul. It has two operating systems, Serra Azul and Corumbá, with a current combined capacity of 7 million metric tons per year. MMX is expanding its Serra Azul unit and has secured long-term off-take agreements for 64% of future production with shareholders WISCO and SK Networks. It also owns Porto Sudeste, a private port in Itaguaí, Rio de Janeiro licensed to export 50 million metric tons per year of iron ore.