NACAB, which stands for Núcleo de Assessoria às Comunidades Atingidas por Barragens (Advisory Center for Communities Affected by Dams), is a non-profit Civil Association. They are dedicated to providing assistance and support to communities affected by dam incidents. NACAB offers various projects and services to communities in different regions, including ATI Paraopeba, ATI 39, and AT Cachoeira Grande.

ATI Paraopeba focuses on assisting individuals and communities affected by the dam breach at the Vale-owned Minas do Córrego do Feijão. ATI 39 provides support to communities impacted by the expansion and mining activities of the Sapo mine, operated by Anglo American. AT Cachoeira Grande offers technical and legal assistance to the communities of Papagaio and Cachoeira Grande, who are threatened by the construction of a hydroelectric power plant.

NACAB is committed to sustainable development and works towards creating collective projects and local enterprises within the affected regions. They also engage in communication efforts through news updates, publications, and a press room. NACAB's transparency and dedication to the welfare of affected communities make them a reliable partner for those in need