There seems to be a bit of confusion about the results of the sampling. The extract below is from the announcement and clearly states that anything over 10mm has been rejected because of a limitation with the plant - it cant handle anything larger than 10mm.
That reject pile may - which equates to approx 8 tonnes of material - (I wish) contain 100s of diamonds larger than 10mm.
The relevant part of the ann is below.
The DMS plant consists of a feed hopper fitted with a 50 mm grizzly to remove the oversize material prior to delivery to a scrubbing trommel fitted with a minimum of 0.5 mm and a maximum of 10 mm screens. In the scrubbing unit the sample is disaggregated and de-slimed, with the fine clay and sand fractions being removed and piped to the tailings pond and the plus 10 mm material rejected to the oversize stockpile. Essentially the plant from this point forward does not have the capacity to treat any material larger than 10 mm. From the scrubbing trommel the plus 0.5 mm and minus 10 mm fraction is pumped to a dewatering screen after which it is introduced to the dense media slurry that via a cyclone enables the separation of the material into heavy and light mineral fractions. Whereas the light fraction is discarded by the cyclone the heavy fraction, consisting of a range of minerals including any diamonds that may be present, is recovered as a Heavy Mineral Concentrate (HMC) that is henceforth treated by Xray, heavy liquid and final hand sorting processes to recover the diamonds. These final stages of the processing, and in particular the hand sorting process, were undertaken by specialist laboratories and personnel in Perth. Of the 100.05 tonnes of kimberlite processed approximately 8% was rejected at the grizzly as being too large for processing. Of the remaining material 5% was rejected at the scrubber and 10% by the cyclone (light mineral fraction). The balance of the material consisted of material finer than 0.5 mm (sent to the tailings pond) and 101 kilograms (0.11%) of heavy mineral concentrate.
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