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

To: Richard Mazzarella who wrote (1822)	11/15/1997 9:52:00 AM
From: Bill Jackson	Respond to of 3744

Richard; It depends on what leaches out. The cyanide is not the problem, it is the other heavy metals like arsenic and iron etc that are left exposed and leach those metals in acidic drainage from the sulfides as sulfurous acid. this acid leaches as it goes all kinds of funny stuff. In an arid area with a well built leach pad it is quite safe to operate. The problem is to keep the used tailings from oxodizing further. This is usually done with a pond where they tails are under water with a clay cap. In an arid area where the water table is far underground they would not be able to trust it to stay anaerobic. That canal on the property might be useable for keeping the water table high enough to allow a tailing pond to operate? In any event it is probably solvable as a heap leah operation, even in high cost USA as most operations are bulk equipment based, and labor is a small factor in the equation. Bill