Companhia Siderurgica Nacional (NYSE:SID) Q1 2021 Earnings Conference Call April 29, 2021 11:00 AM ET Company Participants Marcelo Ribeiro - Chief Financial & IR Officer Benjamin Steinbruch - President, Executive Board, Chairman & CEO Helena Guerra - Head, Sustainability, Health, Safety & Environmental affairs Edvaldo Rabelo - Cement Business Director Luis Martinez - Executive Officer Conference Call Participants Leonardo Correa - BTG Pactual Daniel Sasson - Itaú BBA Carlos De Alba - Morgan Stanley Caio Ri ...