Bema(Bgo) and Arizona Star Message Board

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Gold/Mining/Energy : Bema(Bgo) and Arizona Star

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To: John Soileau who wrote (9830)	2/18/1999 5:08:00 PM
From: Philip Choy	Read Replies (1) of 10482

John, I have been trying to understand the economics of Cerro Cassale. From what I can gather from the news release so far, I have come up with the following;(I am no expert) From one ton of rock: 0.71 gm x 74% recovery = 0.53 gm or 0.0168923 oz and 2000 lb x 0.26% x 89% recovery = 4.8 lbs therefore, in 59.2 ton of rock, we will produce 1 oz Au and 284.15 lbs Cu On the cost side: cash cost/ton =$6.35 or $375.92 for 59.2 ton capitol cost per oz = 182 - 79 = $103/oz Total cost for 59.2 ton 375.92 + 103 = $478.92 or $8.09/ton If cc is to be economical, we must have the following 0.0168923 x pog + 4.8 lb x p of Cu > 8.09 using 300 gold and .70 Cu 0.0168923 x 300 + 4.8 x .7 = 5.07 + 3.36 = 8.43 > 8.09 I think cc will turn out to be economical at current metal prices. Regards.(there may be mistake in my assumption, I could be wrong)

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