I'd be surprised if the SP passed 50c prior to a positive...

I'd be surprised if the SP passed 50c prior to a positive announcement being released. The longer that takes the more likelihood of a deeper retrace. At the moment it's likely sellers are probably feeling reluctant to quit as low as 44c, but buyers would be quite aware that the trading bias has now changed, and they will know that if they hold back then sooner or later a few sellers will offer their stock a bit lower. Mind you, if buyers really want the stock they'll also be very aware that assay results could come at any time, so they'll be in two minds. I could take a very healthy profit myself, having bought at 30c, but I don't want to miss the bus if some really good numbers come in from the lab.