A micro diamond analysis of the SRC concentrate will still not provide a clear picture. As I understand it, any diamonds smaller than the 1.4 mm have already been lost by the dms process.
I am not sure any micro-diamond analysis on the processed bulk sample will add value. Right now they need to ensure they have a valid process to get accurate macro diamond counts. We currently don't have any confidence in the process used. Once we have a good process, re-run the 100 tons, and the 400 tons to see if there is an economic macro count. No one really cares about the micro counts, other than as an indicator of the diamond potential when you have a very small sample. That will the the case for the lower sills and other locations of the top sill.
If you want a micro analysis of the top sill at the bulk location to use as a baseline. I think a fresh sample from the non-processed pile needs to be used.
I think suggesting that this play is on a knife-edge is misleading and greatly exaggerated. An incomplete analysis of 100 tonnes doesn't put it on the edge, and accurate numbers from 500 tonnes won't necessarily put it there either. It will take poor results from numerous locations and no new discoveries to put it there. All the new buying at this lower level seems to agree with me.
Ted