I'll also add the timing of Mt Boppy Sth coming online roughly...

I'll also add the timing of Mt Boppy Sth coming online roughly coincides with the running out of gold ore to process at Mt Boppy. So they will have the choice next year around Jan to choose whether to mine Mt Boppy Sth or Wonawinta. I think what they are planning to do right now is Mt Boppy Sth given the current gold/silver price but by next year they could decide if silver is at $50+ USD that Wonawinta makes better financial sense.

Which is smart isn't it, having the option to go whatever profitable route is best.