Ann: Drilling at Tabba Tabba Finds High Potential Pegmatites, page-49

Its also pointless comparing a Australia based asset drill program result to a North American one purely on just a grades basis.

There are so many other factors not just grade. What stage the project is at ie exploratory or expansion of resource, current size and shape of known ore body and potential for expansion, impurities, depth of the ore body, accessibility to ore body and infrastructure and what is the likelyhood of finding more resource further along at strike target locations which pending on the geographical location can make it either easier to find or hard based on ore body structures common to that geography. Im not an drill operator or geologist but they would outline even more.