Isn't he one of the more prominent researchers in your field of interest (which is, judging by your fascinating posts, ancient archaeology/human history)? I recall him having some theory that Europeans were mining near the Great Lakes long before Columbus.
I've not seen him associated with the copper mines in that area.
The last I saw of him was a one hour documentary about the megaliths/pyramids underwater off the coast of Japan. He stated that they were natural formations and when shown what appears to be a large human face chisled into one of the structures, he said: "Humans may have 'tinkered' with them before the sea level rose and covered them.'
He also said that if anyone finds anything written on the structures to call him and he would be on the first plane back. lol