Mineral reserve estimates are determined following the geological definition and models produced from exploration efforts. Mine designs, schedules and engineering plans are completed based on the orebody knowledge and definition. Thereafter cost estimates are determined which include all capital and operating expenditure forecasts. Other modifying factors such as metallurgy, environmental, legal, marketing, community services and sustainable development programs are included to describe how the project will be implemented over time. A financial evaluation of the project is the final step which determines the economics of the project and results in the ore reserve estimate.