Then you really need to study SD a little bit more

balance sheet, resource/properties they own, management team/strategy and form a opinion by yourself. not just somebody's recommandation on this forum. although they claim to have insider info and knows how to use a calculator, (sorry I can not help to let this one pass).

as I said before, investing in resource companies is very tricky, not only the stock price is usually volatile, the risk associated with mining/drilling is also very great.you should expecting a 50% haircut at any moment. that is why you have to understand why you are in the stock in the first place.

I never looked at that one, so I can not provide you the information.but good luck with that.