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Gold/Mining/Energy : Winspear Resources
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To: wayne cath who wrote (18934)5/2/1999 6:45:00 PM
From: skelly   of 26850
 
A larger drill will prevent stones from fracturing more than a small bore drill. Monopros on MPV's AK used a 12 inch bore to extact the bulk sample. This 12 " bore allows the bulk to be extacted more efficiently (where there is a pipe) . The larger bore would not be as useful on a narrow dyke.
cheers
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