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Gold/Mining/Energy : Medinah Mining Inc. (MDHM) -- Ignore unavailable to you. Want to Upgrade?

To: Handshake™ who wrote (6225)	9/20/1998 10:11:00 PM
From: the Chief	Respond to of 25548

Hi Vince. I will be very interested in the results! For those that read my previous post regarding IRON. I am hoping that you don't think, thats what I think they will find!! My point was that Iron/copper/gold/silver can all cause illumination! My intention was not to pick Iron out of those 4 and say thats it, just to add clarity to the "illumination theory"!!Because Fe is a "resident mineral within a porphry illimunation will ocurr! Of course the Fe is a "marker" and the likelihood of finding Au/Ag or Cu is good. Economics is whole different issue. Economics is based on Cash Cost(CC) per ounce of Gold and/or CC per pound of Copper. What makes a deposit worthwhile is; a) high percentage recovery - this is the ability to recover what is there. ie. 2% copper with a recovery of 40% isn't as good a deposit as 1% copper with a recovery of 95% b) cut-off grade- if you have 2g/t of Gold but the process for extracting can only "refine to .8g/t then your deposit cut-off grade is .8g/t....which means this gold is not recoverable They sound the same but in fact they work together. A deposit may have two grams per tonne. The cutoff grade is .8g/t but the recovery is 80 %. So your recoverable gold from a 2 g/t deposit is; 2g/t-.8g/t = 1.2g/t @ 80% = .96g/t Cash Cost is determined in a "pre-feasability study" as a ball park figure. The final "take it to the bank CC and IRR are computed during a "Bankable Feasability Study" which is the pre-cursor to production. Al these numbers are example only!! the Chief