This paper outlines a method for using existing mine geological data in a consistent manner to predict the true nature of the veins discovered in the mine area by exploratory diamond drilling.The method compares the geological characteristics of vein intersections of unknown nature, with the distributions of the same characteristics as obtained from known ore-bearing and waste veins in the mine area. It employs a sequence of multivariate statistical tests, resulting in an estimate of the probability that a vein of unknown nature is ore or waste. These probabilities are used to rank all such vein intersections, so that the best (most likely to be ore-bearing) exploration prospect can be chosen first.

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