Hathor Exploration is one that has recently soared, but it may actually have a great deal of upside left as they have turned onto a massive uranium deposit in the athabasca region of Canada. Small float and relatively small market cap still. Keep an eye on that. Pitchstone is another to watch in the U sector though I don't own that at this moment. Good luck.

I think Kimber is definitely one for the long haul though in the PM sector, and I own a nice amount of it.