Reconciliation studies and reserve estimation

Abstract Reconciliation studies involve the comparison of different sets of data, and the analysis of differences between them in terms of accuracy and precision. Such studies are important during reserve estimation as a means of validating input data and modelling techniques used, as well as providing a means of checking the accuracy and precision of the resultant models. Examples of such studies from work done at the Neves-Corvo copper-tin mine in southern Portugal are given. It is argued that reconciliation studies should form an integral part of any reserve estimation, as a means of controlling the quality of the estimation procedures used.