This report focuses on the description and analysis of the impacts and harm caused by activities of the mining and steel industry in the municipality of Açailândia in the state of Maranhão, Brazil...The process of investigation underscored grave health problems generated by the emission of pollutants on the part of the iron plants and coal furnaces. This pollution of the air, the water and the soil has brought respiratory problems, eye and skin problems...The mobilization of the communities seeking redress and reparation for the damages suffered has been characterized by difficulties in access to information, irregularities in the approval process for environmental impact studies, and attacks on the honor and reputation and freedom of expression of the social actors mobilized in favor of the affected communities. [refers to Vale and Ferro Gusa Carajás (part of Vale)]