Hate to rain on your parade but Blackham mainly has a bunch of...

Hate to rain on your parade but Blackham mainly has a bunch of previosuly mined pits where the lodes continue by dipping along strike from the pits.
To me that means high strip ratio which is going to push up mining costs for open cut mining.
Unfortunately in my opinion (which admitadly has no professional qualification to back it up) the grades look low for underground mining.
To me It looks more like a NAV opencut scenario, than an NST scenario where grade is increasing with depth in a UG mine.
Welcome to be refuted by someone with actual mining knowledge unlike me.