News: GBR Great Boulder Resources Enters Agreement With Ausgold To Form A JV, page-7

They tend to go quiet before big announcements...my guess is they are close to, or have, tracked down "the neck" ..if so there will be a trading halt next...but detailed and accurate documentation will need to be tabled with it, which in itself takes time. One needs the patience of Job.

Pretty clear here their intentions:
"...It is now clear there are two sulphide phases at both Mt Venn and the Eastern Mafic projects - an initial magmatic sulphide phase with higher nickel tenor and a subsequent host rock sulphide contamination that generates pyrrhotite.

Great Boulder is continuing to develop its understanding of this system in order to locate a nickel rich primary magmatic sulphide accumulation at the Eastern Mafic and expand the copper-rich Mt Venn system...."