GRI Reference Pro� le: 3.4, 3.5, 3.13, 4.16, 4.17 How to read this report This report is based on the materiality matrix of Vale and is structured according to the company’s Vision and the guidelines of the GRI For the � fth consecutive year, Vale is publishing its sustainability report according to the guidelines of the Global Reporting Initiative (GRI), G3 version, including the Mining and Metals Sector Supplement.