Mano River Resources Inc: First 1,000 Carats Produced From Underground Trial Mining at Kono Project in Sierra Leone

Mano River Resources Inc ("Mano" or "the Company") (TSX VENTURE:MNO)(AIM:MANA)
the TSX-V and AIM-listed exploration and development company focussed on West
Africa, is pleased to announce a progress update on the Kono kimberlite diamond
project in Sierra Leone. The Kono project is a Joint Venture between Stellar
Diamonds Ltd ("Stellar") (49%) and Petra Diamonds Limited ("Petra") (51%). Mano
River is a 63.2% shareholder in Stellar.


Kono Project Highlights:

- 1,049 carats (12,132 diamonds) recovered from trial mining to end May 2008

- First commercial diamond tender, and project revenues, scheduled for August 2008

- Pol-K shaft in-situ kimberlite grade increased to 66 carats per hundred tonnes
("cpht") and Bardu shaft in-situ grade established at 75cpht


- Stope trial mining from Pol-K shaft due to commence in August

- 3,167 line km E-M geophysical survey completed, processing and target
selection ongoing


Karl Smithson, CEO of Stellar Diamonds commented:

"The production of the first 1,000 carats from underground trial mining is a
significant milestone in our Joint Venture with Petra Diamonds. We continue to
be encouraged by the kimberlite grades and observed quality of diamonds being
produced. We are moving to a position at the Pol-K shaft where we expect to
significantly increase the monthly tonnage and diamond production. Through the
planned tenders of diamonds in August and October, and regular diamond sales in
the coming months, we expect to be able to offset project expenditure from
revenues.


We take this opportunity to congratulate Petra Diamonds, our partners and
operators of the Kono project, for their continued diligent management and
excellent progress made to date."


Overview

The exploration and trial mining operations at Kono project are progressing well
and continue to deliver encouraging results. Two shafts are being developed,
Pol-K and Bardu, and processing of exploration and development material to date
has yielded 12,132 diamonds weighing a total of 1,049 carats.


The first commercial tender of diamonds from the Kono project is planned for
August in Johannesburg, through existing Petra marketing channels. This is
likely to comprise approximately 800 carats of diamonds from the Pol-K shaft and
will give an indication of the likely minimum value to be realised from this
kimberlite shaft. A second, larger tender, comprising diamonds produced from the
first Pol-K stope, is being scheduled for October.


As diamond production from the trial mining stopes increases over the coming
months, revenues from diamond sales are expected to generate regular cash flow
to offset against development expenditure.


Pol-K Shaft

Development at the Pol-K shaft is continuing at the 64.5m level, with
preparations underway for the commencement of test stope mining. Stoping is
expected to commence by August and will result in increased ore extraction on
which to assess, with more confidence, the diamond grade and value, as well as
likely mining operating costs. The current grade at Pol-K is 66cpht and some
668.35 carats have been produced from this kimberlite.


Bardu Shaft

At the Bardu shaft, which is currently at a depth of 50m, a break out from the
shaft has begun and exploration development along fissure strike has commenced.
Some 244 carats of diamond have been produced at an average grade of 75cpht.
Shaft sinking will continue to the 64.5m level (as at Pol-K) at which point,
subject to ground conditions, stoping operations will commence.


E-M Geophysical Survey

Due to the considerable exploration potential at Kono, a 3,167 line km airborne
electromagnetic geophysical survey has been completed by Fugro Airborne Surveys,
the objective being the discovery of kimberlite pipes and blows. Processing of
the data from the survey is expected to be complete by August, when target
identification and follow-up of selected anomalies will commence.


Other News:

Tongo Project

Mini-bulk sampling of four kimberlite dykes has commenced at the 100% owned
Tongo project in Sierra Leone. Previous diamond testing by Stellar and
independent analysis of these results estimated diamond grades of between
100cpht and 500cpht for these kimberlites. Extensions of some of these same
kimberlites in an adjacent licence were recently bulk sampled by Koidu Holdings,
who reported grades of between 196cpht and 288cpht from a 1,000 tonne sample.
The historical diamond value for the Tongo dykes is estimated to be over US$175
per carat, which further supports Stellar's belief that these high grade dykes
could have economic potential.


The objective of Stellar's current mini-bulk sampling programme is to collect
and process approximately 400 tonnes of kimberlite in order to determine with
more confidence the diamond grade and value from the kimberlites within
Stellar's licence area.


North DRC Project

The first phase sampling programme has been completed in the 1,308km2 Remec
joint venture area. Some 117 samples have been collected and shipped to
Stellar's diamond laboratory in Monrovia, Liberia. Initial results show an
abundance of kimberlitic indicator minerals in some samples, which is suggestive
of the presence of as yet undiscovered kimberlites in the licence area. An
appropriate follow up programme will be implemented once all results are
available and interpreted. Stellar has the right to earn a 75% interest in the
joint venture through funding to the bankable feasibility stage.


IPO Update

The Board of Stellar has decided to push back the planned IPO to Q4-08 on the
basis of prevailing market conditions. Additionally, the Board also felt that
Stellar would be in a stronger position to complete its IPO once the first
diamond tenders have been completed. By this time Stellar expects to have
realised its first revenues, adding value to the Company ahead of the planned
listing. The Chairman of Stellar, Lord Daresbury, has written to all Stellar
shareholders in respect of the above, as well as a proposed interim private
placement of up to Pounds Sterling 2 million to be offered in July 2008.


For further information on Mano River Resources and Stellar Diamonds Limited,
you are invited to visit the Company's website at www.manoriver.com.


Mano's Qualified Person responsible for reviewing the content of this release is
Karl Smithson, who holds a BSc in Geology from Kingston University in the UK,
and an MBA from the Graduate School of Business in Cape Town, South Africa. He
is also a member of The South African Council for Natural Scientific Professions
and has 20 years of diamond industry experience.


Forward-Looking Statements

This press release includes certain Forward-Looking Statements. All statements,
other than statements of historical fact, included herein, including without
limitation, statements regarding potential diamond mineralisation and reserves,
exploration results, marketing plans and future plans and objectives of Mano,
are forward-looking statements that involve various known and unknown risks and
uncertainties as well as other factors. There can be no assurance that such
statements will prove to be accurate and actual results and future events could
differ materially from those anticipated in such statements. The Company has no
obligation to update or modify such forward-looking statements, either as a
result of new information, future events or for any other reason, and we
expressly deny any such obligation in relation thereto. Important factors that
could cause actual results to differ materially from Mano's expectations are
disclosed under the heading "Risk Factors" and elsewhere in Mano's reports and
other documents filed from time-to-time with the TSX Venture Exchange and other
regulatory authorities in Canada and available under the Company's name on
www.sedar.com.
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