Ann: Wallbrook Exploration Target & Mineral Resource Estimate, page-118

Perhaps those who want to whinge about the company's management should take it up with the ASX. Or take legal action, have a think about the grounds for either; being pissed off doesn't cut the mustard.
Spending some millions on exploration and finding nothing is Very common. Mineral exploration is high risk and accordingly, should be approached as a high risk investment. Surely this is commonsense. The sector is speculative.
On the matter of a share price falling 80%, it is also not uncommon in this sector.
Some weeks ago I posted about Paladin, in its early days. And I am sure a lot more speculators had a crack; I told how I bought at 10 cents and the sp subsequently dropped to 1 cents = down 90%. I lost track of my shares for a while. When rediscovered they were 60 cents. I sold. PDN went on to glory. I didn't feel let down or pissed off that someone didn't point out PDN had a long way to go.
Just my opinion, not advice, but I think NXM has a nice future.
If anyone finds it too hot in the kitchen, perhaps they should get out of the kitchen.
Perhaps all those who want to rail against the Management should review their Sentiment to at least 'None'.