One of the most important issues that geologists and mining engineers have always faced has been determining the limits of the mineral (deposit) and estimating the quantity and quality of reserves.

Estimation of mineral reserves requires extensive and effective use of statistics or, in other words, mathematical methods to collect, organize and interpret data and obtain logical conclusions and decisions based on analysis. An acceptable mineral reserve estimate is based on valid databases that contain raw data and information based on the interpretation of such data. The information includes the interpretation of storage geology, mineralization continuity, mineralization control, and mineralization origin, which is prepared by experts in the form of brief reports with drawings and sections.