Good question tetrahedral. One area comes to mind is Dominion....

Good question tetrahedral. One area comes to mind is Dominion. That was giving some interesting drill results that looked promising, then we discovered Federation and that shifted the focus. However, our dear departed Mr Clifford spent $31 million on exploration last FY when normally we spend round $16 million. He was probably trying to find something at Dragues to save his own neck. That said it seems exploration results have dried up.
Back to the Hera area. In Feb 2021, I calculated the value in the ground. We have 3.5 million tons of reserves with a LOM of 6 years, mine open in multiple directions. The value was $2.72 billion with a gold grade of 1.4g/t valued at the time as $2400/oz. By far the most abundant metal is zinc with an average grade of 9.8% for 343kt which at the time was worth $4560/t for over $1.5 billion. Pb was worth over $600 million @ $3200/t grading 5.5% so it was the second most valuable asset in the ground. Interestingly copper came in 4th behind gold, and was worth $138 million. You can throw in $25 million of silver also.