Update on Kono Project

Petra Diamonds Ld 27 February 2006 Petra Diamonds Limited Kono Project, Sierra Leone - Nearing First Diamond Production Petra Diamonds Limited ('Petra' or 'the Company'), the AIM-quoted and ASX-listed diamond mining group, announces an update with regards to the Kono Project ('the Project') which is situated in the Kono diamond district of Sierra Leone. Petra and Mano River Resources Inc ('Mano') are engaged in a joint venture ('the Mano JV') relating to the production of diamonds from the Lion fissures which are within the joint venture's licence areas. Highlights: • Mano JV nearing first production from the Lion fissures, with site facilities to be established by the end of March 2006 and diamond recovery from first bulk samples expected by June 2006 • Petra has incurred US$3 million of expenditure on the Project and has earned a 51% interest in the joint venture and in Basama Diamonds Limited, which holds the Project licences Pre-production update Petra confirms that the Project is on track for the first diamond recovery from treatment of the initial bulk samples by June 2006. The establishment of site facilities remains on track and is expected to be completed by the end of March 2006. The manufacture in South Africa of the diamond recovery plant was completed on schedule and it has been shipped. Pitting and trenching prior to final selection of intrusion points revealed very encouraging results, with fissure widths of 1.7, 1.2 and 0.4 metres having been exposed on the Lion fissures 1, 2 and 3 respectively. During the course of the past year numerous geological samples were taken from various kimberlite fissures in the area, with mineral probing returning some very encouraging results which have been used in prioritising the location of intrusion points. Further geological exploration work is also being undertaken for the many kimberlite dykes known to exist on the joint venture's licences in the Kono region. High-resolution satellite imagery images are awaited to assist in this aspect. Financial Under the terms of the Mano JV, by spending a total of US$3 million on the Project, Petra would acquire a 51% equity interest in the Project. Petra previously announced that it would accelerate expenditure and therefore the development of the Project in order to bring production on line as soon as possible. Petra confirms that this expenditure has fast-tracked development of the Project and means that first production is now expected by June 2006. Petra announces that it has now incurred US$3 million of expenditure on the Project and has therefore earned a 51% interest in the Mano JV, including Basama Diamonds Limited (previously a 100% owned subsidiary of Mano), the joint venture company which is the holder of the Project licences. Johan Dippenaar, Petra's CEO, commented, 'We have successfully accelerated development of the Kono Project, sending a clear message to the market that we deliver on our objectives. We have already earned our 51% equity interest in this exciting project and look forward to first production beginning later this year. We enjoy an excellent relationship with Mano River Resources and the solid co-operation received from them has assisted a great deal in the efficient development of the Project. '. Mano's President and CEO, Dr Tom Elder, commented: 'We are very pleased with the rapid progress Petra has made in moving the first of Mano's kimberlite dykes in Kono towards diamond production. Petra's ability to call on a substantial pool of highly experienced exploration and mining personnel from their three South African dyke-mining operations has undoubtedly been a key factor. 'Mano also applauds the fact that, in parallel with the technical programme, Petra has expended considerable effort in establishing harmonious relations with Kono area Chiefs and Elders and the local populace in general. 'The acceleration of the programme is excellent news, especially since at the immediately adjacent Energem dyke/pipe mining operation the diamonds being produced are currently reported to be selling for well in excess of US$200 per carat.' Ends For further information, please contact: Petra Diamonds, South Africa Parkgreen Communications, London Johan Dippenaar/David Abery Justine Howarth / Annabel Leather Tel +27 11 467 6710 Tel +44 20 7493 3713 John Baillie, Perth Field PR, Adelaide Tel +61 8 9381 8888 Kevin Skinner Tel +61 8 8234 9555, Mobile +61 414 822 631 This information is provided by RNS The company news service from the London Stock Exchange
UK 100