Roche Bay - Aeromagnetic Survey Results


Eurolife Building, Suite 3G
1 Corral Road
P.O. Box 515
Gibraltar

www.rochebay.gi

             New aeromagnetic survey suggests significant upside to
                        Roche Bay's Eastern orebodies.


Gibraltar, 1 August 2006:

Canadian iron ore junior, Roche Bay plc (US OTC: RCHBF, "Roche Bay" or "the company"), recently received the results of an aeromagnetic survey flown over the company's Adler, B and C orebodies, located on the Eastern side of the Melville Peninsula in the Nunavut territory. The results suggest Roche Bay's total Eastern mining leases could contain significantly more magnetite iron ore than previously estimated.

The aeromagnetic signature of Roche Bay's C orebody suggests a length of 5,100m and a width of well over 600m, above previous estimates of 4,270m in length and 122m in width. Based on previous geological modelling assumptions (not to JORC code standards), Roche Bay's Eastern orebodies had been estimated to contain 1.2bn tonnes. Extensive drilling now needs to be conducted to JORC code standards before any updated estimates can legally be released.

Apart from registering the surprising size of the C orebody, the magnetic signature in the area covered by this latest aeromagnetic survey also points to the potential for the Adler, B and C orebodies to be part of one single continuous ore system below surface. This is consistent with previous geological interpretations garnered from earlier drilling. Ore tonnages several times beyond any previous estimates therefore are conceivable.

While the original C orebody estimate calculated a surface area of 52 hectares, the latest survey suggests the C orebody could be roughly 6 times larger, covering over 300 hectares. It is estimated that a single mine pit area can be delineated, containing enough ore to support a 40-year project, delivering 30 million tonnes/year of shippable product. Any mine would be further advantaged by a low strip ratio due to the significant outcropping across much of the orebody.

Chief Operating Officer, Danie Botes, says, "Now our priority is to commence drilling to establish what it is we are actually sitting on in terms of size, grade and level of impurities. At present we only have the results of very limited drilling that took place in the 1980's, consisting of 16 drill holes sunk into the Eastern orebodies, with only one hole testing depth down to 315 metres into the C orebody, and still in ore. Metallurgical testwork showed that the ore could be easily upgraded to a 67.3% Fe product (ground to -325 mesh) or to a 71.2% Fe product (ground to -400 mesh), using crushing and magnetic separation only, without the requirement for flotation. But it is essential we confirm this historical data with further drilling and metallurgical testwork to reduce the current level of uncertainty."

Roche Bay's Consulting Geologist, Hendrik Bosman, commenting on the results in his technical report said: "One geophysical figurative indicates that the C-ore body would be a good target for the initiation of drilling activities. The area shows considerable investigative opportunities."

Chief Executive Officer, Benjamin Cox, comments, "The indication that our Eastern orebodies are now much larger than previously envisaged significantly changes our view on the scale and importance of the Roche Bay project. We are no longer working on the basis of developing a stand-alone 8 million tonne concentrate and pellet operation. Consequently we have entered early-stage discussions with several parties with whom we may create a strategic partnership. We remain determined to maximise the value of our asset."

Roche Bay has an existing offtake and mine development option agreement with listed Anglo-Dutch company, Corus, the world's ninth-largest steelmaker, in exchange for joint venture equity ownership of the Eastern orebodies. The underlying business model for that arrangement assumed an 8m tonne/year project.

The company is cognisant of the fact that the potential quantity and grade targets mentioned in this release are conceptual in nature and that limited exploration drilling has been conducted on its leases to define a JORC compliant Mineral Resource. It remains uncertain whether further exploration will result in the determination of a Mineral Resource or Reserve on Roche Bay's mining leases. A program to conduct further drilling of up to 40,000m is planned for the latter part of 2006 and throughout 2007, as the necessary funding and drill rigs become available.

Roche Bay (US OTC: RCHBF) is an emerging iron ore company with a large resource base in Canada's northeast, in two groups of ore bodies: the Eastern which are the current focus and the Western ore bodies which will support an inter-generational life of mine. The project's key advantages include its low infrastructure development costs and its ability to ship product to Europe in under nine days. The Company is domiciled in Gibraltar. Its ultimate majority shareholder is Borealis Exploration Limited (US OTC: BOREF).

Please see the Company Website at www.rochebay.com for more details.

Eastern Ore Bodies - new dimensions: length / width resulting from aeromagnetic survey


      Orebodies            Ore Body Dimensions

      Orebody A               2,300m x 160m
      Orebody B               4,029m x 350m
      Orebody C               5,100m x 600m
      Orebody D               1,525m x 125m
      Orebody E                 824m x 125m


Eastern Ore Bodies - original dimensions: length / width / depth (estimated)


     Orebodies            Ore Body Dimensions

     Orebody A           1,342m x 133m x 266m
     Orebody B           1,830m x 159m x 318m
     Orebody C           4,270m x 122m x 244m
     Orebody D           1,525m x 125m x 250m
     Orebody E              824m x 125m x 250m

Source: Roche Bay technical data

Note 1: a depth of twice the width was assumed for the purposes of Original tonnage calculations

Note 2: an in-situ density factor of 3.8t/m3 was assumed for the purposes of the Original tonnage calculations



For more information, please contact:


Melinda Moore

Finance Director and Chief Financial Officer

Roche Bay plc

Mobile:  +44- 7726-875-478

Email: melinda@rochebay.com



Or



Timothy Grey

The Millbrook Partnership

10 Adam Street WC2N 6AA

timgrey@millbrookpartnership.com

DDI:  + 44 (0) 20 7520 9457

Mob: + 44 (0) 7796 072298

Tel:   + 44 (0) 20 7520 9455

Fax:  + 44 (0) 20 7520 9456


Notes to Editors:


1.) Roche Bay holds seven 21-year renewable mining leases (Year: 2019/2021)
across 10,973 acres (4,440 hectares).



2.) Previous geological estimates assumed Roche Bay's Eastern orebodies
contained 1.2bn tonnes of resource; while its Western orebodies contained 3.4bln
tonnes of resource (not to JORC standards).



3.) Roche Bay's latest aeromagnetic survey, flown in late June 2006, by Goldak
Airborne Surveys, of Saskatoon, Saskatchewan, was completed on grid spacings of
200m, from a height of 80m, to confirm and expand previous aeromagnetic data
collected in the 1970's, which had been completed on grid spacings of 2
kilometres, from a height of 200m.



4.) An aeromagnetic survey is a geophysical survey using a magnetometer aboard,
or towed beneath, an aircraft. A magnetometer measures variations in the earth's
magnetic field strength. Rocks containing larger amounts of magnetic minerals -
such as magnetite - register a higher response on the magnetometer. In the case
of magnetite ore, the strength of the magnetic reading is influenced by the
abundance of the magnetite ore, the proximity of the ore to surface and it may
be somewhat influenced by the thickness of the orebody.



5.) The iron formations on the Melville Peninsula belong to the Prince Albert
Group and consist of highly metamorphosed and deformed volcanic and sedimentary
rocks. These rocks are similar to the greenstone mineral belts found in Western
Australia and Zimbabwe, in terms of the estimated age of their formation, basic
geology and mineralogy. Small mineralogical differences define slight variations
in the specific conditions of their formation.



6.) The purpose of the JORC - Australasian Joint Ore Reserves Committee - code
is to provide a reliable standard for reporting exploration results, mineral
resource and ore reserves. The code has become widely accepted as a standard for
professional reporting purposes for international mining companies.



7.) Roche Bay's Eastern orebodies offer significant infrastructure and transport
advantages for project development, given their location just 5-10km from
tidewater. This removes the requirement for expensive rail or slurry pipeline
transportation infrastructure. In addition, Roche Bay lies beside a natural
harbour with more than 20m of water depth, enough to allow VLOC (250,000 DWT and
above) capesize vessels to dock and load, without the need to incur port
dredging capital costs. Meanwhile, Roche Bay is just under 9 days sailing time
(3,050 nautical miles) from Rotterdam. These advantages potentially allow Roche
Bay to market pellets competitively to major Western European steel makers on a
landed-cost (cfr) basis.

Roche Bay Eastern Orebodies Project -

Proposed Development Timeline:


                   Stage I Concentrate / Pellet Plant
                            Eastern Orebodies

        Year                    Stage I Development Activities

       2006-07                Pre-Feasibility (40,000m drilling)
       2007-08                  Feasibility (70,000m drilling)
       2008-09               Equipment + Bulk Samples (40,000 t )
       2009-10                 Complete Permits / Commence Mine
        2010                      First Concentrate Shipments
        2011                        First Pellet Shipments

The information forming the basis for this summary was prepared by Hendrik Bosman, Consulting Geologist for Roche Bay plc who is a member of a Recognised Overseas Professional Organisation (ROPO), the South African Council for Natural Scientific Professionals (SACNASP). Hendrik Bosman has sufficient experience which is relevant to the style of mineralisation and type of iron ore deposit under consideration and to the activity for 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, and has consented to the inclusion of the above information in the form and context in which it appears.

A copy of Mr Bosman's geological report on the aeromagnetic survey results is available on request.



                      This information is provided by RNS
            The company news service from the London Stock Exchange


Stock Market XML and JSON Data API provided by FinancialContent Services, Inc.
Nasdaq quotes delayed at least 15 minutes, all others at least 20 minutes.
Markets are closed on certain holidays. Stock Market Holiday List
By accessing this page, you agree to the following
Privacy Policy and Terms and Conditions.
Press Release Service provided by PRConnect.
Stock quotes supplied by Six Financial
Postage Rates Bots go here