bolli hits the goods , page-105

What ANGRY ANT is saying is that he used the information (grades, drill collar locations, reverse engineered drawings) supplied by SIR in their ASX announcements to create a 3D solid in a mine design package. Applying the assay information he may have done a quick and dirty calculated tonnes and grade for nova or he could have used the supplied information to produce a resource estimate in the 3D solid that is displayed above.