You may want to ask yourself what is the purpose of rock chip sampling. It is not to measure grade of a mineral resource. The purpose is to sample surficial rock and prove continuation of a mineral system on surface (to drill later). To achieve this the geolgoist chips away at the most prospective grains of a rock. As this is a very selective process the grade that is yielded from rock chip assays will almost always be higher than any drill core.
Ann: MW2 and MW7 Continue to Expand on Latest Surface Samples, page-55
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