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Gold/Mining/Energy : Montello Resources
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To: gordon m. who wrote (2319)8/20/1998 8:36:00 PM
From: Jesse  Read Replies (1) of 4256
 
Gord, of course as little overburden as possible is wanted, and fortunately the knowledgeable ones behind most of these operations know that.

Consider that a 600m by 600m 'pipe' at 80 meters of overburden would require removing, say, a patch 800m by 800m for stable slopes: at minimum 800 times 800 times 80 equals about 51 million cubic meters of wet stuff, say with a specific gravity of 2.50.
That's 127 million tonnes of material to move and store in a stable pile. Since the stuff may be flowing, stabilizing dams may be necessary. _ Let's be generous, and say the operation costs down around $5.00 per tonne. That's over $600million for overburden removal.
-- Rough estimates here,
but concerns are obviously more than just ramblings. ;)

Cheers and ciao!

-j
:>
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