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

To: jack hampton who wrote (17022)	3/27/1999 5:56:00 PM
From: WillP	Read Replies (2) \| Respond to of 26850

Greetings: I've been reading Mr. Hampton's posts for several days now. I don't pretend to be a mining engineer, but I've been in and around enough mines over the past quarter century to know roughly what one looks like when I trip over it. :-) For what it's worth...I concur with his musings, estimates, and reasoning in this and other posts. I've been using a minimum height of 3 metres for most of my calculations. Perhaps 3.5 is more realistic...perhaps not. I'm sure a good mining engineer could and will concoct a design to minimize the mining height in most areas. I am still thinking drift and fill, not having any great confidence in the strength of kimberlite. Time will tell on that score. Regards, WillP

To: jack hampton who wrote (17022)	3/28/1999 9:18:00 AM
From: Sam	Respond to of 26850

good post jack I can understand the problem that a dozen old drill holes not properly grouted could cause down below when you come to them while minning ,sure cut the dust down in a hurry sam

To: jack hampton who wrote (17022)	3/28/1999 9:34:00 AM
From: Gord Bolton	Read Replies (1) \| Respond to of 26850

Thank-you for your post Jack. I greatly appreciate your perspective, posts, and the info therein. Would that be $30.00 to $40.00 per tonne Canadian or US for the underground part estimate? Others have mentioned that much of the ore would lie in a permafrost section. How would that effect the operation in terms of thawing and freezing-refreezing crushing? I am also curious about the use of diesel powered equipment underground. I suppose that would neccessitate some powered ventilation. I suppose that propane powered equipment in confined spaces might create an explosion hazard. Bring on the fuel cells. If the Kimberlite is soft enough to crumble in your hand as some have suggested, could some type of large diameter boring device be used to bore and crush at the same time? Again, I suppose that moisture content and temperature would be a factor. I am not expecting the definitive final answer, just your perspective and thoughts based upon your experience.