Companhia Sider rgica Nacional announced that the board of directors has approved the redefinition of the attributions of Executive Officers David Moise Salama and Marcelo Cunha Ribeiro, which are hereby defined: Mr. DAVID MOISE SALAMA is now in the position of Executive Officer, responsible for insurance, credit and real estate; and Mr. MARCELO CUNHA RIBEIRO becomes the Executive Director of Finance, responsible for the treasury, controller, tax and accounting areas, cumulating the functions of Executive Director of Investor Relations.