In this report, we provide important information related to our sustainability efforts in terms of workplace safety, environmental performance, social improvements and corporate governance for calendar years 2018 and 2019. We are already one of the most efficient and cleanest steel producers in the world, and we will continue to focus on sustainability efforts. This report covers our Nucor mills and product facilities, and subsidiaries including the David J. Joseph Company, and was developed to reflect the Global Reporting Initiative (GRI) Sustainability Reporting guidelines. At the end of the report, a reference table of applicable GRI indicators is provided. Where metrics recommended in GRI are relevant to Nucor Corporation and data was available, we have included this information, but we have not endeavored to report in accordance with GRI.