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Gold/Mining/Energy : International Precious Metals (IPMCF)
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To: DON VATER who wrote (12996)6/22/1997 12:46:00 PM
From: Zeev Hed   of 35569
 
Don: This is exactly the type of misinformation one should avoid. An acre is 4046 sq meter. 5 feet is 1.5 meter. Thus the volume of 5 acre feet is 6000 cubic meters or 6000 tons. I cannot come up with any kind of assumptions that will allow daily processing of 10,000 tons per day of ore with a yearly budget of water of 6000 tons/year. Prey, tell how do you do that. Even if you assume John's scenario (using only 3 tons water per ton of ore, which I doubt is feasible, particularly if there is an appreciable amount of clay in the ore), you have to dump (according to IPMCF 20% goes with the tailings) 20% on each cycle and if you use recycling (and reverse osmosis would be the cheapest recycling method) you will lose at least another 20%. Therefore even if you use only 30000 tons of water per day, your losses would be at least 12000 tons per day and in less than three days your yearly water supply be gone. I am not even talking about evaporation losses and few other realities of life in the water recycling process (build up of undesired ions etc.)

If you were told by a responsible person at IPMCF that this is what they need, then I have a bridge in Brooklyn to sell you.

Zeev

PS: Once more, I am using the definition that no one objected to: An acre foot water per year is the quantity of water represented by an acre one foot deep of water or 6000 tons.
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