Use of Direct and Indirect Distributions of Selective Mining Units for Estimation of Recoverable Resource/Reserves for New Mining Projects

摘要

Using the Turning Bands Method a lognormal variable has been simulated on a 5 x 5 x 5m grid in order to represent the closely spaced data available at the final mining stage. From this data the equivalent of exploration borehole values on a 20 x 20 x 20m have been selected to represent the data at the early stage of a new mining project. Direct and indirect distributions of selective mining units (SMU's) techniques have been applied to the 20 x 20 x 20m grid data for recoverable resource estimates which are usually required for feasibility mine planning. The results for each approach (direct or indirect distributions of SMU's) are then compared with the corresponding "actual" values based on the available 5 x 5 x 5m grid in order to determine the efficiency of each approach.