CSN Stock&Steel Event Webcast Alert

Aug 16, 2007, 01:00 ET from CSN

    SAO PAULO, Brazil, Aug 16 /PRNewswire-FirstCall/ -- Companhia
 Siderurgica Nacional CSN (BOVESPA: CSNA3) (NYSE:   SID) is pleased to invite
 you to join the 'STOCK&STEEL 2Q07' Event Webcast (Portuguese Presentation
 with simultaneous translation into English), TODAY, AS FOLLOWS:
                               Stock & Steel 2Q07
                          Portuguese Presentation with
                     Simultaneous Translation into English
                           August 16, 2007 - Thursday
                              07:30 a.m. (NY Time)
                           08:30 a.m. (Brasilia Time)
             Webcast: http://www.mz-ir.com/webcast/csn/evento/?e or
                      at the IR website: www.csn.com.br/ir
     For further information, please contact CSN - IR:
     (55 11) 3049-7591