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Gold/Mining/Energy : Gold and Silver Juniors, Mid-tiers and Producers -- Ignore unavailable to you. Want to Upgrade?

To: maxncompany who wrote (43056)	6/22/2007 4:46:02 PM
From: AuBug	Read Replies (2) \| Respond to of 78426

They clearly did not know what they were doing in the Cortez Trend. They drilled 2,800 shallow holes and found nothing but smoke. Up the street Barrick has already found over 30 million oz of gold. Ann Carpenter has only drilled a few holes for US Gold and found far more gold than they did in, what did you say, 20 years. If it was on care and maintenance then how did 2,800 shallow holes get drilled??? Ralph Roberts of the USGS published clear geological reports explaining why elephant gold in the Cortez Trend is found deep. Dr Roberts began publishing in 1955 explaining the geology of the Cortez Trend region. He very clearly explains it in chapter 8 of his book A Passion for Gold. I don't believe $100/oz cost no matter who says it.

To: maxncompany who wrote (43056)	6/22/2007 7:04:04 PM
From: E. Charters	Read Replies (1) \| Respond to of 78426

Bacterial leach. Bach Tech is out now, so the process has to change. Cash costs were $107. Cash costs do not include capex. Capex could be an additional 200 dollars. maybe more.. At 523,0000 ounces hooo ha! 48 million - capex plus i - is 92 bucks an ounce, so real cost is $199/oz plus the extra fuel hike since then equals $210 I think. ************************* I like bug leach for some things, but is unproven in any commercial ore body so far. It needs testing. I would have a back up. I favour roasting and cat conv, or autoclave with pressure only. You don't NEED a bug leach. If bug leach fails they are out ten million and need to regenerate investor confidence. Ergo, eff the pilot plant tests, and they only work in pilot plants, not at scale. Have a back up. if you don't use it, you will never know if you needed it or not, but that is a good thing, even at ten million out of pocket. You could always sell it. Roasting and cat conv make acid, is better imho and it should be yours. *********************************** The processing facilities have been designed to process approximately 2 million T per year. The process will include crushing, screening, bio-oxidation of sulphides, water treatment, cyanide heap leaching of oxides and oxidized sulphides, gold adsorption on carbon, carbon stripping and gold refining to produce dore. BacTech’s Process The sulphide ores will be oxidized using a bio-oxidation process in vats. Both the oxide and oxidized sulphide ores will be heap leached using a sodium cyanide solution. The gold will be recovered using carbon columns and a traditional Zadra strip circuit. The sulphide ores will be pre-treated to remove significant quantities of ferrous iron and arsenic before the introduction of bacteria to the vats. Initially, there will be three parallel vats capable of holding 150,000 T of whole ore. An additional three vats will be added after the oxide component of the mine has been depleted. The operating cycle for each vat is 138 days. Metallurgical test work indicates that 80% of the gold can be extracted from both types of ore. The total life-of-mine gold production is estimated to be 523,000 ounces. The leach pad will be designed in two phases. The initial pad will be built using the material from the existing leach pad. The existing synthetic material from the original pad and pond will be reclaimed and safely disposed. The ultimate area of the Phase I and II leach pads will be 2,500,000 sq. ft. and ore will be stacked to a maximum height of 175 feet.