this surprises me - never realized that the Achilles Reef drill assays averaged 2.19 g/t but the recovered grade was 26.5 g/t and now the Maxwells Reef drill assays are averaging 10 g/t - a grade factor of about 10 seems incredible
and drill samples compared with stope production over about 20 years (page 11) seems that the average grade factor was about 6
drill assays generally less than 4 g/t became about 24 g/t when milled
this JORC is a great study of grade factoring - an excellent read for all the Lachlan miners and their investors
this supports the claim on the website that there is about 4 to 5 million ounces in the Morning Star mine
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910000 ounces gold jorc resource, page-14
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