Companhia Siderúrgica Nacional (NYSE:SID) Q2 2021 Earnings Conference Call July 28, 2021 10:30 AM ET Company Participants Marcelo Cunha Ribeiro - Investor Relations Executive Officer Helena Guerra - Head, Sustainability, Health, Safety & Environmental Affairs Luis Martinez - Executive Officer Edvaldo Rabelo - Cement Business Director Benjamin Steinbruch - President of Executive Board, Chairman & Chief Executive Officer Conference Call Participants Daniel Sasson - Itaú Leonardo Correa - BTG Pactual Caio Ribe ...