Some sulphide boulders display layering and breccia textures with grades of zinc-lead-silver mineralization similar to ore at the Sullivan deposit (see photos below). The sulphide boulders with zinc ...

If you are in need of a lesson on just how much things have changed in the last 60 years, an anecdote from my childhood might suffice. My grandfather was a junk man, augmenting the income from his ...

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