Canaã dos Carajás is a municipality in the state of Pará in the Northern region of Brazil. The world's largest iron ore mining project, S11D, is …Canaã dos Carajás is a municipality in the state of Pará in the Northern region of Brazil. The world's largest iron ore mining project, S11D, is being built nearby. The municipality contains 30% of the Carajás National Forest, a 411,949 hectares sustainable use conservation unit created in 1998 that includes mining operations in a huge deposit of high-grade iron ore.