July 3, 2006

Mano Update on Petra Diamonds Joint Venture in Kono, Sierra Leone

Mano River Resources Inc (“Mano”), the TSX-V and AIM-listed company with extensive mineral licences in Liberia, Sierra Leone and Guinea, announces an update with regard to the Kono Project, where Petra Diamonds Ltd (“Petra”) and Mano are engaged in a joint venture relating to the production of diamonds from the Lion kimberlite dykes in the Kono diamond district of Sierra Leone.

First diamonds recovered
Mano’s joint venture partner and Operator of the project, Petra, has confirmed that commissioning of the 75 tonnes-per-hour Dense Media Separation (“DMS”) production plant in Kono was completed on schedule in June 2006 and that diamond recovery commenced towards the end of the month, with the plant starting to treat the bulk samples recovered from exploration operations.

To date 44 diamonds, totalling 5.6 carats, have been recovered, the largest being a stone of 1.4 carats. The samples processed to date comprise mixed and diluted material from exploration operations and, whilst very encouraging, are not large enough to arrive at a representative grade.

Mining development
Shaft sinking operations are proceeding well and a sound infrastructure is in place supporting the DMS plant. Two shafts, both of which are on kimberlite dykes, are in progress with the deepest (Black Rock) being at a depth of 13.5 metres and the second (Lost Shaft) at a depth of 9 metres. The shafts will be sunk to a depth of around 30 metres before stopes are prepared to access the dykes for mining. Numerous ‘rolling’ exploration trenches and shafts continue to be sunk so as to identify the best dyke targets out of the multiplicity of dykes available for development.

Dr Tom Elder, Mano’s CEO, commented, “We are very pleased with Petra’s highly professional operatorship of the project, resulting in the plant being commissioned, and recovery of the first diamonds from the Kono project being achieved, exactly on schedule. The recovery of 5.6 carats of diamonds, including a 1.4 carat stone, from the small amount of material processed to date is highly encouraging. Sinking of the production shafts is on track and we look forward to further developments at Kono over the coming months.”

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Notes
1. The information in this update that relates to Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Jim Davidson, Pr. Sci Nat (reg No 400031/06), who is a Member of the Geological Society of South Africa, a ‘Recognised Overseas Professional Organisation’ (‘ROPO’), included in a list promulgated by the ASX from time to time. Jim Davidson is a full-time employee of the Company and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Jim Davidson has given his written consent to the inclusion in this announcement of the matters based on his information in the form and context in which it appears.

2. It should be noted that the potential quantity in this report is conceptual in nature, there has been insufficient exploration to define a Mineral Resource and it is uncertain if further exploration will result in the determination of a Mineral Resource.

For further information on Mano River Resources and its exploration programme, you are invited to visit the Company’s website at www.manoriver.com or contact one of the following:

Tom Elder
President and CEO
Mano River Resources Inc.
+44 (0) 1235 810740

Justine Howarth/Ana Ribeiro
Parkgreen Communications
+44 (0) 20 7493 3713

Jamie Cumming
Bell Lawrie
UK
+44 141 221 7733

Raz Hussein
Controller
Canada
+1 (604) 689 1700