Commodity Ore Grades Geology Powder Factor Location Gold High and low Disseminated Sulphide 1.15 kg/m 3 Russia This disseminated sulphide mine is one of the top producing open-pit gold operations in Russia. ? Mineralisation is disseminated in sedimentary schists and shales ? Blasts are fired in a 10 metre bench ? The site contains high grade (3.5 g/t) and low grade ores Substantial movement of ore is not monitored or accounted for BMM System accurately translated post-blast dig lines ? Misclassification of ore (i.e. high grade ore is stockpiled as low grade or low grade ore is sent to the mill as high grade) ? Ore loss, with gold being sent to the waste pile ? Dilution, with tonnes of waste being treated as ore ? Blast movement monitors (BMMs) were installed in

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