You had better hurry. Both GOG and ECU are about to publish their resource reports.
And you still need time for aquisition at a decent price. Price is likely to go up just before the releases. Some folks talk to the companies and have a good idea as to just when. Best rumour for ECU is two weeks from now.

I should have mentioned about ECU, they are a bit over one third of their drilling done so by the time they are through some two to three years from now there is likely to be about a billion ounces of silver in the kitty. Some estimates are for 500+ million ounces by this time next year.