North Australian Diamonds Limited

Dr David S Tyrwhitt

Director

Dr Tyrwhitt has a long history in the diamond exploration industry dating back to 1959 when he was first employed by De Beers in Tanzania as a diamond exploration geologist. He was the CEO and Managing Director of Ashton Mining Ltd from 1988 to 1991 where he was involved in the exploration and feasibility of diamond deposits in the Northern Territory and  Australia (including Merlin), the development of  the Argyle alluvial through the Argyle joint venture, diamond exploration in Scandinavia, feasibility of the Cempaka alluvial diamond project in south east Kalimantan Indonesia, and key negotiations and contractual matters for Argyle Diamonds. Since leaving Ashton Mining, he has been involved in diamond exploration in Canada, China and Australia.

Dr Tyrwhitt was chairman of JORC and during his chairmanship, introduced the diamond reporting code.