newbie questions

Hi All

I am new to the TAM thread, and not a shareholder as yet, but I was hoping that some here might be kind enough to answer a couple of my questions.

1. What are the main risks and challenges that TAM face. I am assuming that a drop in the price of gold is the obvious one, with their Central Tanami operation having a relatively high operating cost per ounce.

2. Where is the greatest potential for TAM? In the recently purchased Central Tanami operation or in ABM's exploration?

3. What are the next major milestones for TAM?

4. Are there any valuations on where the share price could get to if these milestones are achieved?

Thanks for your help, and sorry if my questions are basic or just plane stupid.