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Gold/Mining/Energy : ECHARTERS -- Ignore unavailable to you. Want to Upgrade?

To: E. Charters who wrote (2583)	5/6/1998 9:32:00 PM
From: Al Cern	Read Replies (1) \| Respond to of 3744

Thanks for all that great info. I am beginning to get an understanding of the processes involved in the plant, and the variables that affect the processes and the costs. In your previous post you said,"Biooxidation has yet to see a major project with proven economics although you always hear about trials." What about Wiluna Mines in Australia which is producing at $323AUS, cash costs. They produce about 120K oz.s/yr.. with head grades to 8g./ton and, 88% recovery. They appear to be getting pretty good at the process, which is described at: oberon.com.au The cost figure is from Great Central Mines last quarterly report, period ending Dec 31,1997. Sincerely, Al Cern

To: E. Charters who wrote (2583)	5/9/1998 12:19:00 AM
From: go4it	Read Replies (1) \| Respond to of 3744

Still pretending to know it all I see. I bet you missed me didn't you? Newmont expanded its refractory leach capabilities during the year by refining its bio-oxidation technology and a separate process that utilizes ammonium thiosulfate to treat carbonaceous ores. Both processes are designed to economically extract gold from low-grade refractory ores that otherwise would be considered waste. During the year these processes yielded 28,000 ounces of gold. Construction of a $96 million, eight-million-ton refractory leach pad will begin in 1997 with annual production of 250,000 ounces of gold expected by 1999.