Previous drilling by Dwyka revealed that the volcanoclastic sediments exceed a vertical thickness of 200 m; however, none of the holes drilled penetrated the base of the sedimentary sequence. The sandy sediments in the upper part of that sequence were proved diamondiferous by means of a 270-tonne bulk sample. These sandy sediments look similar to the sandy tuffs of Western Australia’s lamproites, in particular those at Argyle. Further, eight of the diamonds found in the bulk sample have similarities to the producing lamproite bodies in Western Australia, in that the diamonds are highly resorbed (unlike most South African diamonds, apart from
those recovered from the Premier Mine). Following further assessment of the property the Board has taken the
decision to pursue a geophysics and diamond drilling programme to obtain samples of the source rock.
February 6, 2006
The company announced the recovery of macro diamonds from two bulk samples. The first recovered 40 diamonds from approximately 150 tonnes of material. The results of the second sample are pending.
December 31, 2005
Preparation commenced for bulk sampling of the Bosele pipe. It is anticipated the 150 tonne parcel will be processed by De Beers in Jan/06.
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