posters some questions & answers of sorts, page-51

iceman, could you please point to where it says the RC doesn't pick up the nuggets, backed up with data (i.e. not the video?). Not wishing to be picky, but the accepted wisdom was that the nuggets were not in the JORC - there is nothing to back up that assumption.

I picked an announcement of drill results from the ASX site - 7th September 2010.

The highest Cu intersections noted were:

DORC302 5.43%
DORC428 6.29%
DORC430 7.61% (diamond tailing)

Out of 12 RC and 6 D holes. So RC holes don't seem to have any problem drilling the high grade zones (although it doesn't indicate of these were NCu or not).

Also note the variation in assays between DODH096 and DODH 121. 96 has 82% more copper than 121 on intersection 2, and 121 has 42% more copper than 96 on intersection 3. Yet both are diamond holes, only 5m apart. Such is the variability of the mineralisation. So discrepancies between close spaced holes are to be expected regardless of the type of drill, and RC can give high grades of Cu anyway.

The variability in the mineralisation is a headache for resource and reserve calculations, and will be a headache for the processing plant too unless they can mine intelligently enough to give a consistent feedstock.