A prospecting program near the Caswell mine announced November 21, 2017 returned elevated base metal values, with samples up to 9.44% cobalt, up to 1.27% copper and up to 2.92% nickel. Caswell appears to be an enriched cobalt vein system similar to other targets throughout the Camp although most of the cobalt at Caswell is hosted by Nipissing Diabase, in contrast to mafic volcanic rocks that are more commonly associated with cobalt mineralization.

Silver is conspicuously low in all samples collected in the Caswell area and low silver content in these mines is believed to have precluded any significant production, making this an ideal target for soil and till geochemical surveys, ground geophysical surveying and drilling.

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