Well:
Explaurum = resource of 11.7mt @ 1.8g/t for 650koz. (Reserve of 7.2mt @ 2.1 for 485koz).
PFS capital setup cost for mill, etc = approx $90-100m.
Gascoyne resources Dalgaranga project = $85m setup.
Kin mining scoping study says $65m with second hand dodgy mill.