gold assays

HI all I came across a report from another goldie re their assays . They found that their cores when given what they called "Fire screen " re tests for the "nuggetty " effect or larger particles of gold in their samples .
Their assays rose significantly ??!!
This was a third level of test from what we have done .
I wonder if we have the same problem . Larger gold particles ??
I would have thought they would be picked up in "normal assaying "

Another company I had shares in some years ago apparently did this type of re test with good results ..

Any thoughts from those who may know more on this ???

Not long now for updates I think .

Cheers