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Gold/Mining/Energy : Winspear Resources -- Ignore unavailable to you. Want to Upgrade?


To: marcos who wrote (8485)10/18/1998 8:25:00 PM
From: E. Charters  Respond to of 26850
 
You have to pay thousands of women to pick out the diamonds from finely crushed ore on high speed belts. Someone has to go by and check their in box gloves for holes every half hour. So it is very labour intensive. Grease tables only get 15% recovery and they are very slow so you have to have hundreds. Security costs thousands per hour and is frequently compromised. The flow sheet in the Russian mines is fairly complex. There are about 7 or more techniques of recovery. Gravity, froth flotation, x-ray fluorescence sortex, grease, picking, air fall multi signature separation, infrared etc.. Costs are about the same as making a copper-zinc concentrate. Tailings pollution is low and not a problem. No heavy metals and dangerous chemicals. The platinum and REE's in kimberlites may be recoverable though.

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