Inferred mineral resources are considered too speculative geologically to have the economic considerations applied to them that would enable them to be characterized as mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability. Mineral resource estimates do not account for minability, selectivity, mining loss and dilution. There is no certainty that the inferred mineral resources will be converted to the measured and indicated categories or that the measured and indicated mineral resources will be converted to the proven and probable mineral reserve categories. For additional information, please refer to the Canadian National Instrument 43-101-compliant Technical Reports for the applicable properties available on www.sedar.com or other publicly available disclosure of the applicable mine operators.Non-U.S. GAAP Measures – We supplement the reporting of our financial information determined under United States generally accepted accounting principles (U.S. GAAP) with certain non-U.S. GAAP financial measures, including cash costs, after-tax cash flow, and free cash flow. We believe that these adjusted measures provide meaningful information to assist management, investors and analysts in understanding our financial results and assessing our prospects for future performance. We believe these adjusted financial measures are important indicators of our recurring operations because they exclude items that may not be indicative of, or are unrelated to our core operating results, and provide a better baseline for analyzing trends in our underlying businesses. We believe cash costs, after-tax cash flow, and free cash flow are important measures in assessing the Company's overall financial performance.