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Strategies & Market Trends : Winter in the Great White North -- Ignore unavailable to you. Want to Upgrade?

To: marcos who wrote (2958)	9/9/2002 4:21:59 PM
From: E. Charters	Respond to of 8273

Don't know what the problems are. The Rio is the Santo Domingo, so there must be water. If you have a pit, you can recirc the water so you don't need lots just enough to fill the pit and a supply to overcome evaporation. If you use a Knelson then you need to filter and centrifuge the water to make a clear feed for the Knelson backpressure. Evidently they managed much HE in that area, so the problems are not insurmountable. I would say the floods report to channelways and the plano itselfo does not go to lako. What you do is build flood ditch around your work area if necessary. I prefer Knelsons for the fines and spirals and rockers for the coarse, as you cannot set a Knelson for all sizes of gold, and its advantage is on fines. The water needs of such a setup are only 60% of your sand feed volume. Sand is from 15% to maybe 30% of your total feed and water to operate recovery equipe is 60% of total feed. So sand-water is, on a 1000 yard operation, at the most 300 yards. This amount of water is all you need in a pit, so it gets used once in 12 hours, so can settle for all that time. Gravel can be steep sluiced or rocked and does not need much water. Boulders are trommeled and spray washed, rolled out and inspected for large nuggets. All water is bled off, sumped, pumped to a clearing pit, centrifuged and recirculated. They already do a version of this now. The idea in seeking economics is to reduce HE to simplest pieces of equipment. A dredge is the way to go. It can float in 3 feet of water. the Caliche may be cemented but it can be dug dry somewhere else and transported to the dredge by other means. It may help to soak it first like they do permafrost to thaw it. It's all in the technique. EC<:-}

To: marcos who wrote (2958)	9/9/2002 5:40:58 PM
From: E. Charters	Respond to of 8273

Anudero tingo, is dat dey operatado alredeo. 4 monthada ago. So de watero is okao. If dey lavado 150,000 tonnados, they musta hado lotsa watero pur lavado. Dat is 1500 tonnado per dayo. No problemo. Reado the historia once moreo. You gonna optico dat dey usedo lotsa heavy equipada. 3 of dis, two of dat, one big a one dere, etcetero. Dey musta movado with truckada or bellada dumpo. So lots of dieselo fuelada. Lots of partsimento hydraulico etcetero. Shrinkado la operatcione to una lavado feeda par conveyerosi. Una shovelado. Una grizzelada. Dey alredo hava. Una trommelado. They hava. Una petito loadero hougha paylodero. Tres pumpado pur watero. Una centrifuga. Mova la dirta shortisssimo. Usa smalla watero. Simplado. Less than 5 buckso par yardo. Cheapo. Economicissimo. EC<:-}