Ann: Drilling Starts - High-Grade Gold Gap Zone-Morning Star Mine, page-25

I wouldn't bother. They haven't even got a resource and I wouldn't be using the previous loss generating operation as a guide.
If they are going to chase similar narrow vein reefs like McNally's, then cost are pretty much going to be the current gold price especially if they don't drill up enough ore to run the plant 24/7. Week on week off is far from ideal.
Surely they won't go mining again with out a resource or detailed mine plan. Recipe for failure.