I've read the latest announcement which indicates very high...

I've read the latest announcement which indicates very high grades of gold discoveries; the best I've seen from any mining company announcement and yet the share price is in the pits. When other companies hit a bit of gold or speculate, the share price sky rockets and all traders go ballistic.
Is someone or something trying to keep the price down? I know that the stock market is a mugs game but this tops everything. Can anyone shed some light.
I've been a long term holder of this "dog" and can't wait until the price gets to my initial purchase price so I get out and use the cash for a more worthwhile endeavour.

Thanks in advance.