What makes it unprofitable? genuine question, I'm sure...

What makes it unprofitable? genuine question, I'm sure you're not here to down ramp so I'm interested in what you think the mining issues will be?
All the studies seem to point to profitability and the pm investments Tom Kaplan and co have previously touched have been best in class and his team has quite the track record so why are they wrong?
I'm entirely open to criticism of lake Roe but please validate your concerns other than current sp otherwise almost all gold companies on asx would currently be painted with that brush.
You probably know far more than I about mining so please enlighten me.