Ann: Shamrock Delivers Grades of up to 89.8% Gold, page-23

I suggest you put these results into context by looking at the illustration. The distance between coordinates is 20 m, which shows that individual bodies are pretty small and especially narrow, mining some of these will involve much dilution as the selectivity of the mining equipment is limited. The sample results are dominantly for 2 m intervals, which is not even the true width of the deposits intersected. Management carefully avoids making any statement about what these true widths are based on their interpretation.
Finally, have a look at the holes with the very high grade intersections and see if you can tie these up along strike. You cannot, which means there is not a consistent high-grade structure.

Good results are always positive, but there are degrees op positiveness.