Factors to consider.....1. It took some 8 holes into Olympic Dam...

Factors to consider.....
1. It took some 8 holes into Olympic Dam before they hit significant copper. Like us, they did not get a hit on the first hole. And the explorer at the time that finally hit the sweet spot was Western Mining Company, aruably back then the best copper explorer in the country with bucket loads of expertise on hand and $$$. ( BHP eventually did a takeover)
2. As mentioned above, the Ernest Henry deposit does not sit exactly where it might have been expected to be. As asteroider's post points out, the EH deposit is on the periphery of the geophysical anomoly. Seems we should maybe also focus on the periphery but more closer to the Mongoose surface copper deposit and the adjacent Great Australian copper mine. Perhaps these should be the guide to drill vectoring, I mean, follow the copper down from the surface rather than plonk a single deep hole into the guts of the anomoly and hope for the best. And it would be a less costly approach.
3 Bring in an equity partner. No CR, what we need is to farm out some equity so the drilling costs are shared. Eat humble pie, and bring in a partner. 50% of something is better than 100% of nothing.
4. Sub 1c share price does seem overdone, I'm buying more if we get down to 0.007c. At that price or in fact anywhere under 1c the risk/reward iwould seem worth the punt.