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Gold/Mining/Energy : Manhattan Minerals (MAN.T) -- Ignore unavailable to you. Want to Upgrade?

To: Elizabeth Andrews who wrote (2897)	7/7/1999 3:25:00 AM
From: Jeff Dickson	Read Replies (1) \| Respond to of 4504

There may be no town here but there is a river. The river is a nonissue, and is easily diverted should TG-3 be mined. You can see a pictures of the mighty rivers in the powerpoint presentation on the "Tambo Grande" slide. Fortunately they took the picture at a time of year when there was actually water present. Cheers, -jeff Powerpoint slides are accessed right off their home page. That's also where you'll find the intercept maps with the old TG-1 data.

To: Elizabeth Andrews who wrote (2897)	7/7/1999 11:48:00 AM
From: Claude Cormier	Read Replies (2) \| Respond to of 4504

<<There may be no town here but there is a river.>> Yes.. But it is near-dry unless we are in the rainy season and can be easily diverted. << if the pyritic host is part of the ..... expensive mining problems >>> I don't know why you constantly bring back this non-issue. Most VMS deposits consist of pyrite which typically constitutes 50-90% of the massive ore whith sphalerite (zinc) and chalcopyrite (copper) and galena (lead) forming 10%.

To: Elizabeth Andrews who wrote (2897)	7/9/1999 11:27:00 AM
From: Bruce Robbins	Read Replies (1) \| Respond to of 4504

Elizabeth, The river is a non-issue in this case. The sulfides are over 150 meters deep. Water and pyrite are an issue in surface mineralization because the pyrite oxidizes over a very long time creating an oxidized cap- in this case, you are talking about sulfides that are more than 150 meters (500 feet) below surface where there is no oxidation. A VMS deposit is mainly a large pyrite lens with some copper-rich (chalcopyrite) and zinc-rich (sphalerite) areas. You are talking about mining something that is a minimum of 15 meters (50 feet) wide- dilution is not going to be a problem here. I would love to discuss things with you, but I do not understand your posts. I have some questions: 1) What is the problem with having pyrite (iron sulfide) in either the orebody, the hanging wall or the footwall? 2) Why does friable pyrite cause problems? 3) What are "other serious and expensive mining problems"? 4) How many (%) underground VMS mines in the world have stopes below the water table? 5) How many (%) VMS mines in the world contain pyrite in the orebody?