About the report

We have adopted the guidelines of the International Integrated Reporting Council (IIRC) and the GRI Standards of the Global Reporting Initiative (GRI) to present the annual performance of Nexa Resources S.A. from January 1 to December 31, 2018. The previous edition, for the year 2017, was published in April 2018. The content includes economic, social and environmental aspects, as well as the risks and opportunities mapped and considered of interest by shareholders and other stakeholders. GRI 102-1, 102-50, 102-51, 102-52 ODS 12.6

The financial indicators follow the International Financial Reporting Standards (IFRS) while social and environmental data have been calculated according to Brazilian standards applied to labor and environmental issues. We use the GHG Protocol methodology for the greenhouse gases aspect. The survey of the standard contents, as well as complementary information, was the responsibility of the Sustainability area. The document was assured by PricewaterhouseCoopers (PWC). GRI 102-56

The consolidated financial statements and the accounting audit report are available for viewing on our Investor Relations website (ir.nexaresources.com) on the results page. You can download this document, also in Portuguese and Spanish, on our institutional website (www.nexaresources.com).

Materiality GRI 102-46

The content of this document follows the Materiality Principle established by the IIRC and GRI and was defined based on the evaluation of topics of major relevance to the mining and smelting sector, the Sustainability Accounting Standards Board (SASB) guidelines and sectorial benchmarking. The most important issues were prioritized in consultation with Nexa’s leadership.

The material aspects of sustainability and its long-term goals are presented throughout the report and cover the subjects: People, Safety and Health, Waste, Water, Emissions and Energy, Local Development, Decommissioning and Human Rights. The Economic Performance, Ethics and Integrity topics are considered as transversal topics. GRI 102-47

Material topics