First they should see what DeBeers sample portion reviels.... They have been made aware of the potential problem, so their recovery may be better than SRC.

Secondly.... there should be an effort made to prove diamond content in the bulk sample material.... Caustic disolve a 1000kg minimum sample from 20 differt bags .... or whatever... That way they can show some relative diamond sizes.... a representative sample of the actual small diamond content. What is unusual is that essentually no small diamonds were found... only 4 macros..... and no brown diamonds.

It is highly unlikely that the top sill is barren of micro diamonds... so where are they? Did they get missed in the BeBeers processing or the SCR processing?

Third.... They should caustic dislove a portion of the SRC material.

Unless they are looking to prove the diamond content or deliniate the size of the mud lake sill structures there is no need to drill Mud Lake at this time. They already have enough material to answer the immediate situation in hand.

JMHO