what happened on sept 15

Hi there, new to this thread, coz I'm just doing research on URL.

It looks fantastic on every level, both technically and fundamentals - due for breakout to at least .18. Thinking of buying.

But I'm looking at the chart and something happened on Sept 15 06, that dropped the price like a stone. Thing is, I hunted back to the announcements for that time, and it was a feasibility study, which, except for $4 more in costs per tonne, looked pretty good - so I'm wondering, if anybody remembers back that far, why it took a dive that day, and basically, never recovered.

I mean, a 21% drop is pretty big. Was it just the feasibility report or something else?