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Gold/Mining/Energy : NDT VENTURES

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To: russwinter who wrote (915)	1/3/2001 8:45:06 PM
From: Elizabeth Andrews	Read Replies (1) of 992

Where's the evidence of excellent metallurgy? Which mine processes heap leach material for $3/tn when the stripping ratio is about 4:1 which about what this appears to be? If metal loss is 20% and the stripping costs from $1.50 to $2 per tn and the grade is 1.2 g/tn Au then the cost of the rock to the pad is $3.85 per tn or $6.60 net /tn pre pad. Then you have to crush it, stack it, leach it, agglomerate? electro win, and , and , and.....not much margin here. If the recoveries are 65% which is more normal what then? What is the leach rate at 3/4" crush? Further stuff for thought?

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