An interactive microcomputer application for ore grade interpolation

Following on from an earlier publication on Localized Trend Analysis (LTA), this paper addresses some of the more important issues that have since arisen. Questions ranging in emphasis from details of the fundamental theory to the hardware configuration and the software necessary for using LTA are answered here. The estimation of block grades for an ore panel is illustrated starting from first principles. An interactive microcomputer application for such an estimation exercise is presented. Finally the areas of use and some characteristics of LTA are discussed. Conclusions drawn reflect two important implications, among others. Firstly, LTA as a technique does not have all the answers to questions concerning ore reserve estimation. Secondly, the fact that the method is simple to understand and implement on microcomputers, makes it quite attractive for widespread use.