MENDRISIO, Switzerland, July 14 (Reuters) - Swiss gold refinery Argor Heraeus opened the doors of its site in Mendrisio, in Switzerland's Italian-speaking canton of Ticino, showing the refining ...
Venkat Ashok Reddy's Mkwamba Minerals targets 100-130tpd ore processing, on-site refinery for 80g-1kg daily gold in Katavi ...
THE problem presented by the necessity of refining gold was one for which a solution was sought at least as early as the time, about B.C. 700, when coins were first manufactured in the Western world.
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