In response to your question on admiral bay here are a few facts...

In response to your question on admiral bay here are a few facts about it:
1. discovered ages ago and passed over by the big boys.
2. Pb and Zn are not high value metals.
3. plus grade is low.
4. if grade is too low it doesn't matter how many tonnes there are.
5. grade and tonnage are based on VERY wide spaced drilling which makes these a high risk number. That's why JORC mineral resource categories exist.
3. very very deep - massive capex to develop and long payback time.
4. covered by over 1km of rock full of limestone which is a rock that comes full of caves and water.
5. In an area of high tropical rainfall to continually recharge any porous rocks.