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Gold/Mining/Energy : BET YOUR ASSAY - Mining Terms Explained

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To: POLARBEAR who wrote (311)	1/30/1998 12:32:00 AM
From: Walt	Read Replies (1) of 463

To: Walt (2330 ) From: E. Charters Thursday, Jan 29 1998 11:55PM EST Reply # of 2333 Lowest grades have to go to heap leach gold in Arizona. .015 ounces per ton is profitably mined. Better to have .02 to be sure. Int. Canalaska has a sucessful feasibiliity in Idaho at .022 ounces per short ton. Hard rock "narrow vein" runs profitably in Timmins at .09 ounces to .12 ounces per short ton. If you want to get away with any sort of mining underground, a weigh in a .30 or better assures some light. It all depends on your rock, your metallurgy/leachability, your tons per day, width and other cost factors. echarter@vianet.on.ca The Canadian Mining Newsletter

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