Category: Silver / Gold

Red Back Announces New Discovery in Mauritania

Red Back Mining Inc. (the "Company" or "Red Back") (TSX:RBI) is pleased to announce the discovery of a new zone of mineralization at its Tasiast Gold Mine in Mauritania.

Drilling in the area of the current West Branch deposit has identified a new zone of mineralization located in the hanging wall felsic unit, previously considered to be barren ("the Felsite Zone").

First pass drilling on the Felsite Zone has delineated a strong mineralized structure over a strike length of 350m and to a vertical depth of up to 180m. The Zone is open in all directions and drilling is ongoing.

The Felsite Zone was discovered as part of an in-fill drill program designed to convert resources into proven and probable reserves at West Branch and is outside the current Tasiast resource. Since discovery the Company has intersected the Felsite Zone in 30 drill holes. Significant results to date are reported below:



Felsite Zone Results

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Hole Id        From      To    Width (m)  Grade (Au g/t)   Including
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TA01326RC       112     120           8            1.13
             --------------------------------------------------------------
                123     134          11            2.10
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TA01270RC        88      97           9            1.34
             --------------------------------------------------------------
                101     107           6            1.11
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TA01219RC        47      60          13            4.10
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TA01247RC        82     116          34            2.31
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TA01328RC       106     142          36            1.91    incl 12m at 3.39
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TA01002RC        64     101          37            3.43    incl 14m at 5.76
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TA01271RC       105     143          38            2.46    incl 21m at 3.51
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TA01330RC       129     186          57            1.88
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TA01315RC        72     110          38            3.26    incl 17m at 4.30
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TA01333RC       114     152          38            2.76    incl 20m at 3.89
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TA01332RC        36      69          33            4.13    incl 18m at 5.74
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TA01246RC        61      96          35            2.70    incl 19m at 3.52
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TA01331RC       108     148          40            2.06    incl 14m at 3.15
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TA01224RC        32      48          16            6.55
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TA01316RC        79     116          37            2.93    incl 15m at 5.14
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TA01334RC       114     151          37            3.00    incl 22m at 3.75
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TA01338RC        65      86          21            1.50
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TA01272RC        83     116          35            2.29    incl 18m at 3.22
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TA01335RC       124     159          35            2.04    incl 12m at 3.58
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TA01337RC       162     206          44            2.54    incl 17m at 3.55
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TA01317RC        75      91          16            1.13
             --------------------------------------------------------------
                 96     124          28            1.26
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TA01336RC       119     162          43            2.24    incl 14m at 4.31
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TA01318RC        80      92          12            1.02
             --------------------------------------------------------------
                 97     105           8            1.53
             --------------------------------------------------------------
                124     144          20            1.66
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TA01274RC        76      87          11            1.20
             --------------------------------------------------------------
                 96     103           7            1.45
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TA01244RC        73      93          20            2.10
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TA01320RC        50      71          21            1.25
             --------------------------------------------------------------
                 94     115          21            1.93
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Note: High grade assays cut to 20g/t
Intercepts represent +95% of true width


Commenting on the Felsite zone discovery, Richard Clark, President and CEO of the Company stated: "We are very excited by this new discovery. The scope of the Tasiast Project continues to expand at a rapid pace. The Felsite Zone is a new unit of mineralization and is outside the current resource at Tasiast. A drill program has commenced to expand the Zone at depth and along strike. At the same time we have started a regional program of exploration around the Tasiast Mine targeting additional higher grade feed for the CIL Plant and lower grade mineralization for our Dump Leach operation. We look forward to reporting on these programs over the coming months."

The technical contents of this release have been reviewed by Hugh Stuart, BSc., MSc, a Qualified Person pursuant to NI-43101. Mr. Stuart is the VP - Exploration of the Company and a Member of the Australasian Institute of Mining and Metallurgy. Samples are prepared and analyzed by fire assay using a 50 gram charge at the SGS facility at the Tasiast mine site in compliance with industry standards. Field duplicate samples are taken and blanks and standards are added to every batch submitted. Selected samples from this lab are check assayed each month at other SGS laboratories worldwide.

About Red Back

Red Back Mining Inc. is an unhedged African focused gold producer. It owns and operates the Chirano Gold Mine in Ghana (90% interest) and the Tasiast Gold Mine in Mauritania (100% owned). Major plant expansions at both Chirano and Tasiast are well advanced with commissioning underway. Aggressive exploration programs aimed at increasing the Company's resource and reserve base at both Chirano and Tasiast is continuing.

This News Release contains forward looking statements which are subject to a variety of risks and uncertainties which could cause actual events or results to differ materially from those reflected in the forward looking statements. The Company does not intend to update this information and disclaims any legal liability to the contrary.

On behalf of the Board of Directors:

Richard P. Clark, President

SOURCE: Red Back Mining Inc.

Red Back Mining Inc. Simon Jackson VP-Corporate Development 604-689-7842 Red Back Mining Inc. Sophia Shane Investor Relations 604-689-7842 www.redbackmining.com