Orex Exploration Inc.: Positive Assays Continue to Extend Gold Zones and Prompt Additional Land Acquisition Surrounding

MONTREAL, CANADA, Jul 31 (MARKET WIRE) --
OREX EXPLORATION INC. (TSX VENTURE: OX)(FRANKFURT: O5D) is pleased to
announce additional gold assay results from the Phase 2A diamond drilling
program (Holes BR08-06 to 09) at the Company's wholly-owned Goldboro Gold
Project ("Goldboro") in north eastern Nova Scotia. All 16 holes (BR08-01
to 16), comprising approximately 4,650 m of the Phase 2A drill program,
have been completed with assays pending on holes BR08-10 to 16.

Selected higher grade assay results received for holes BR08-06 to 09(i)
are tabulated as follows:

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CORE GOLD
HOLE # FROM TO LENGTH GRADE ZONE
(m) (m) (m) (g/t) IDENTIFICATION
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BR08-06 115.5 125.5 10.0 0.91 "123" Zone, South Limb
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145.5 150.5 5.0 3.29 "4" Zone, South Limb/Hinge
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162.5 168.0 5.5 1.14 "56" Zone, South Limb/Hinge
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202.5 217.5 15.0 2.49 "78" Zone, North Limb(?)/Hinge
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including 202.5 203.0 0.5 16.30
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including 208.8 209.0 0.2 21.20 Metallic Screen assay
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BR08-07 122.5 144.0 21.5 1.68 "123" Zone, South Limb/Hinge
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including 138.5 139.5 1.0 10.98
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160.0 160.5 0.5 3.18 "4" zone, South Limb
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167.5 168.0 0.5 4.59 "4" Zone, north Limb
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176.0 184.0 8.0 0.80 "123" Zone, North Limb
--------------------------------------------------------------------------
190.0 191.0 1.0 3.32 "A" Zone
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BR08-08 150.5 157.5 7.0 1.23 "123" Zone; South Limb
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181.5 182.5 1.0 3.36 "4" Zone; South Limb
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188.5 198.0 9.5 3.74 "56" Zone; Hinge
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including 194.5 195.0 0.5 27.0
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215.5 218.5 3.0 1.05 "123" Zone; North Limb
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BR08-09 145.0 156.0 11.0 1.68 "123" Zone; South Limb
--------------------------------------------------------------------------
183.0 189.0 6.0 0.97 "4" Zone; North Limb/Hinge
--------------------------------------------------------------------------
198.5 205.0 6.5 2.19 "123" Zone; North Limb
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including 198.5 198.7 0.2 20.60 Metallic Screen assay
--------------------------------------------------------------------------

(i)Assay and QA/QC protocols are outlined below. Assay results
reported in this news release are current for samples processed and
assayed by the laboratory. Logging and sampling has been completed for
BR08-10 to 16, and the remaining assay results are expected within a few
weeks.

Mark Billings, President and CEO of Orex commented, "Gold assay results
still look very good. They have prompted the Company to significantly
increase its land holdings surrounding and contiguous to Goldboro, which
I would consider to be a major gold discovery. Our Goldboro claims now
consist of over 27,000 hectares (270 square kilometres) of territory,
compared with our original claim of 600 hectares (6 square kilometres)."

"It is apparent that the mineralized hinges or fold axes are much higher
grade than the fold limbs. The historically mined portions of the
Boston-Richardson Mine straddle the "123" Hinge. The current drilling
continues to hit the "123" North and South Limbs probably 50m to 100m
below the "123" Hinge. We have, however, intersected the "56" Hinge
beneath the "123" several times and this zone continues to demonstrate
excellent grades. It is also encouraging to see that the total metallic
screen assays, in which all gold is recovered from the sample, are
demonstrating much higher grades of gold."

"Results to date continue to indicate that Orex could double its
resources from the Ramp Area beneath the historic underground workings of
the Boston-Richardson Mine. The Company has already begun the Phase 2B
program that will test the gold mineralization over an additional strike
length of 350m from the Boston-Richardson Mine eastward to the historic
East Gold Brook Shaft."

The 2008 Goldboro drilling campaign

The Phase 2A drill program totalled 16 holes spaced on sections
approximately 25m apart over a 225m strike length extending east from the
current limits of the defined NI 43-101 Mineral Resources (the
"Resources") in the Goldboro Ramp Area (3,105,000 tonnes grading 2.36 g/t
gold in the Measured and Indicated Resources categories). The campaign
targeted the down-plunge extensions to the "123", "4", "56" and other
zones of gold mineralization, previously identified by the Company as
they plunge shallowly to the east beneath the historic Boston-Richardson
Mine at vertical depths ranging from -75m and -200m. The campaign
extended the mineralization 225m along strike between the Ramp Resources
eastward towards the Boston-Richardson Mine and doubled the strike length
of the gold zones.

The Phase 2B drill program has begun and will total 16 holes (BR08-17 to
32, inclusive) spaced on sections approximately 50m apart over a 350m
strike length extending from the historic Boston-Richardson Mine eastward
towards the historic East Gold Brook Shaft. Drilling will target the
down-plunge hinge of the historic Boston-Richardson Belt as well as other
zones above the Boston-Richardson that plunge similarly eastwards towards
East Gold Brook. Historic drill intersections in this area suggest the
presence of similar "Slate Belt" zones stratigraphically above the
Boston-Richardson that may correlate and form continuous zones with the
East Gold Brook slate belts.

In 2008, the Company plans to drill the Boston-Richardson Anticline
Structure over its entire 2.5km length in successive drill programs (from
Phases 2B to 2E) totaling 16,275m in 63 drill holes to define the
ultimate gold potential. The work will also include updating the
geological and resource model, and producing a mineral resource estimate
by year-end in follow-up to the NI 43-101 Mineral Resource estimates
completed in August 2006.

Sample preparation and assaying are being performed by the ALS
Laboratories Group facility in Val-d'Or, Quebec, using the Fire-Assay
Method with Atomic Absorption Spectrometry Finish. The NQ-sized drill
core is being logged, sampled, bagged, tagged and sealed at the Goldboro
site by qualified personnel. Samples were inserted in numbered pails and
shipped to the laboratory in Val-d'Or by commercial trucking. Sample
pails were opened at the laboratory; sample bags were checked, contents
dried and weighed; crushed to -10 mesh (2mm), followed by pulverizing a
250 gram sample fraction to -150 mesh size (0.125mm), from which a 50
gram sample of the pulp was fire assayed. Pulp duplicate check assays are
completed in each batch of samples fire assayed and metallic screen
assays for samples containing Visible Gold are included in the initial
assay protocols. Field blank and certified reference standards are also
routinely included to monitor the laboratories' performance. After review
of initial assay results and reconciliation with the logged zones of
mineralization, specific samples are being identified for re-assaying of
a duplicate coarse crush sample split or by Total Metallic Screen
assaying of the entire remaining crushed sample. Multiple assay
determinations provide a more accurate determination of gold content in
the samples and in the case of Total Metallic Screen assaying, all gold
is recovered in the entire sample.

About Orex Exploration Inc.

Orex Exploration Inc. is a Canadian based junior resource and exploration
company trading under the symbol OX on the TSX Venture Exchange and O5D
on the Frankfurt Stock Exchange. The Company holds a 100% interest in the
Goldboro Gold Project in Nova Scotia. You are invited to browse the
Company's website at www.orexexploration.ca.

The information contained in this news release has been prepared by Mr.
Jean Lafleur, M. Sc., P. Geo., Director and Technical Advisor at Orex.
The drill campaign, core descriptions and assay sample preparations are
being done under the supervision of Billy Shaw, P. Geo., of W.G. Shaw &
Associates (Antigonish, Nova Scotia) and Mr. Alex Horvath, P. Eng., of
A.S. Horvath Engineering Inc. (Ottawa, Ontario). All individuals are
Qualified Persons under National Instrument 43-101 regulations.

The
TSX Venture Exchange does not accept any responsibility for the adequacy
or accuracy of this news release.

Contacts:
Orex Exploration Inc.
Mark Billings
President and CEO
514-296-1641
mark@atwaterfin.com

Paradox Investor Relations
1-866-460-0408
infoparadox@qc.aira.com

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