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Strategies & Market Trends : Winter in the Great White North

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To: Dave R. Webb who wrote (5079)	9/17/2003 8:33:42 AM
From: E. Charters	Read Replies (2) of 8273

Now where in heck would I get Withiwhitchies paper? (Let alone understand it.) Ans:<font color=crimson> Wiwchar's paper is in the Structural Geology of Canadian Ore Deposits Volume II, 6th Commonwealth Mining and Metallurgical Congress Canada (CIM 1957). Mercury Press</font> It is also probably available as a CIM bulletin from the CIMM journal. So you gots to sink a shaft? How many elsewheres are you over? You can drive drift for 300 a foot, but sinking shaft could cost you 2000/V.ft. (Forget ramps, they are only cheaper to operate if you are between 500 and 1200 feet deep, and they cost 2400 dollars a vertical foot to drive -- since they are 300 a foot and 8 feet advance to one foot down.) If you drift over the it will cost 1.5 million per mile. It will also raise your tramming costs, but on a low tonnage mine, that is not that serious. Shafts are more trouble free to operate, and involve much less machinery. Fire hazard is less, and ventilation needs are markedly reduced, saving loads. What is the grade of your resource in troy ounces per short ton? EC<:-}

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