I am not sure Aphae will be workable, anything below about 20M...

I am not sure Aphae will be workable, anything below about 20M is going to be under the ocean water table.
If its faulty and altered I expect there would be serious issues with salt water ingress (as its virtually on the beach front). Maybe BlueBird have a better idea on the risks.
The alluvial is interesting, they are thinking there are some other high grade patches (alluvial and hard rock source) very nearby. My guess would be upstream from the original rivers/streams (NW and NE to the mine??) but cant make out and potential paeleo geography from the maps . Can see the offshore channels pretty clearly though - anyone up for some dredging

Anyway an easy 3600oz certainly wouldnt hurt.
Need to see the actual tenement boundaries and check out that nearby mine they mentioned.