Radisson Mining Resources Inc.
TSX VENTURE : RDS

Radisson Mining Resources Inc.

December 15, 2008 10:24 ET

Update by Radisson Mining Resources Regarding its Drill Program on THE O'BRIEN/KEWAGAMA GOLD PROJECT

ROUYN-NORANDA, QUEBEC--(Marketwire - Dec. 15, 2008) - Radisson Mining Resources ("Radisson") (TSX VENTURE:RDS) is pleased to provide an exploration update on its 100% owned O'Brien/Kewagama Gold Project located near Cadillac, Quebec. The O'Brien-Kewagama Property contains the former O'Brien Mine, which was known for its high gold grades and was considered to be the most important gold producer in the Cadillac Mining Camp in Quebec when it was in operation from the early 1930s to the mid 1950s.

Infill Drill Program 36 East Zone

In late 2007, Radisson commenced an infill surface drill program on the 36 East Zone in an attempt to define, between surface and the 500 foot level, the resource blocks identified in the NI 43-101 Resource Report on the 36 East Zone prepared by Luke Evans, Scott Wilson Roscoe Postle Associates Inc., in 2007. The NI 43-101 Report estimated Indicated Resources on the 36 East Zone, using a 0.17 oz/ton gold cutoff grade, at 270,000 tons at an average uncut grade of 0.56 oz/ton and an average cut grade of 0.36 oz/ton, representing 97,200ounces of gold. The Inferred Resources are estimated at 182,000 tons at an average uncut grade of 0.37 per ton and an average cut grade of 0.29 oz/ton for a gold content of 53,700 ounces.

Thirty six (36) holes: OB07-120 to 134 and OB08-135 to 148 (several holes in this program as well as the Fall 2008 Exploration Program had to be restarted due to excess deviation caused by difficult overburden conditions) totalling 5762 meters were drilled between November 2007 and March 2008. Assays from holes OB07-120 to 132 have been reported previously (see Press Release dated January 18, 2008).

Significant assay results from the infill drill program include 4.3 feet grading 0.270 opt Au (OB07-120), 1.4 feet grading 0.725 opt Au (OB07-132) and 2.9 feet grading 0.357 opt Au (OB08-142). A more complete list of significant assays can be found in the accompanying table attached at the end of this press release.

In addition to the infill drill program two holes (OB08-149 and 150) were collared to test a relatively under explored area between the 36 East Zone and the Kewagama Mine. Hole OB08-149 encountered four zones of gold mineralization including 3.4 feet grading 2.821 opt Au (uncut) or 0.798 opt Au (cut to 2.0 opt Au).

Highlights of the assay results from holes OB08-149 and 150 can be found in the table below.



-------------------------------------------------------------------------
-------------------------------------------------------------------------
Summary of Significant Intersections Hole OB08-149,150
-------------------------------------------------------------------------
Hole From To Length From To Length Au Au
(feet) (feet) (feet) (meters) (meters) (meters) (opt) (gpt)
-------------------------------------------------------------------------
OB08-149 1190.6 1195.3 4.7 362.9 364.3 1.4 0.147 5.04
-------------------------------------------------------------------------
and 1238.1 1241.3 3.2 377.4 378.3 1.0 0.208 7.13
-------------------------------------------------------------------------
and 1272.4 1277.4 5.0 387.8 389.3 1.5 0.356 12.21
-------------------------------------------------------------------------
and 1292.6 1296.0 3.4 394.0 395.0 1.0 2.821 96.72
(uncut)
-------------------------------------------------------------------------
0.798 27.33
(cut to
2.0 opt)
-------------------------------------------------------------------------
OB08-150 366.2 387.4 21.2 111.6 118.1 6.5 0.021 0.72
-------------------------------------------------------------------------
-------------------------------------------------------------------------

note: true widths are currently estimated at 60-70% of drilled widths


Fall 2008 Exploration Drill Program

To date, thirteen holes totalling 6184 meters have been completed and one hole is currently in progress. The 2008 exploration drill program focused on three priority target areas on the O'Brien-Kewagama Gold Property: the eastern extension of the 36 East Zone, a gap area between the 36 East Zone and the Kewagama Mine and the down plunge extension of gold bearing zones beneath the historic workings at Kewagama .

Three holes, OB08-153B, 161 and 162 (hole OB08-152 was lost in the Cadillac Break) were drilled to test the eastern extension of the 36 East Zone and in particular the high grade gold values intersected in drill hole OB08-149 (see above). Assay results from hole OB08-153B included 2.3 meters grading 13.9 gpt gold. Assay results from holes OB08-161 and 162 are pending.

Between the 36 East Zone and the historic Kewagama Mine there is an approximately 300 meter gap that because the O'Brien and Kewagama Mines were held separately has seen little systematic drill testing. As part of the current exploration program three holes, KW08-155A, 157 and 158 were drilled in this area. Partial assay results received to date include a narrow high grade zone in hole KW08-157 that assayed 480.9 gpt Au over 0.3 meters.

At the historic Kewagama Mine five holes, KW08-151, 154, 156, 159, 160, 163A have been completed while hole KW08-164 is currently in progress. Assay results to date have been received for hole KW08-151 and KW 08-156 which respectively encountered 3.0 meters grading 4.9 gpt Au and 2.0 meters grading 6.6 gpt Au. These intercepts are located within the Southern Mafic Volcanic Unit of the Piche Group. What is significant about these intercepts is that most of the historical work around the Kewagama Mine did not test this part of the stratigraphy. Assay results from the remaining holes at Kewagama are pending.

Highlights of the assay results from the current drill program can be found in the table below.




--------------------------------------------------------------------------
--------------------------------------------------------------------------
Summary of Significant Intersections Fall 2008 Exploration Program
--------------------------------------------------------------------------
Hole From To Length From To Length Au Au
(feet) (feet) (feet) (meters) (meters) (meters) (opt) (gpt)
--------------------------------------------------------------------------
KW08-15 1784.9 1827.5 9.8 544.0 557.0 3.0 0.143 4.90
--------------------------------------------------------------------------
OB08-153B 1303.9 1311.4 7.5 397.4 399.7 2.3 0.405 13.90
--------------------------------------------------------------------------
KW08-155A 1095.5 1097.2 1.6 333.9 334.4 0.5 0.376 12.90
--------------------------------------------------------------------------
and 1121.4 1139.2 17.7 341.8 347.2 5.4 0.108 3.70
--------------------------------------------------------------------------
KW08-156 1980.4 1987.0 6.6 603.6 605.6 2.0 0.191 6.55
--------------------------------------------------------------------------
KW08-157 539.7 544.6 1.0 164.5 166.0 0.3 14.026 480.90
--------------------------------------------------------------------------
--------------------------------------------------------------------------

note: true widths are currently estimated at 60-70% of drilled widths


The following sketch shows the drill holes locations:
http://media3.marketwire.com/docs/radisson1215_eng.pdf

Sample Preparation, Analyses and Security

The aforementioned assay and sample information as well as geological descriptions are taken from drill logs as prepared by the project geologists for the drill program. All drill cores are NQ in size and assays were done on sawn half-cores, with the second half kept for future reference. For the Infill Drill Program on 36 East Zone the samples were analyzed using standard fire assay procedures with AA finish at Techni-Lab Laboratory Inc. in Sainte-Germaine-Boule, Quebec. Samples yielding a grade higher than 3 g/t were analyzed a second time by fire assay with gravimetric finish at the same laboratory. For the Fall 2008 Exploration Drill Program the samples were analyzed using standard fire assay procedures with AA finish at Lab-Expert Inc. In Rouyn-Noranda, Quebec. Samples yielding a grade higher than 1 g/t were analyzed a second time by fire assay with gravimetric finish at the same laboratory.

In addition to the standard quality control of the laboratory, a commercial standard sample and a blank sample are inserted in every shipment of 20 samples (or less) for quality control purpose. The blank samples are used to detect contamination at the laboratory while the commercial standards are used to test precision and reproducibility of results. They will represent approximately 10% of the total samples assayed.

Exploration programs on the O'Brien/Kewagama Property are being carried out under the direct supervision of Raynald Vincent, P.Eng., (Quebec) and Bruce Mackie P.Geo. (Ontario) Consulting Geologists for Radisson. Raynald Vincent and Bruce Mackie have reviewed and verified the technical content of this press release on behalf of Radisson and are "Qualified Persons" as defined in National Instrument 43-101.

This press release includes certain "Forward-Looking Statements". Other than statements of historical fact, all statements are "Forward-Looking Statements" that involve various known and unknown risks, uncertainties and other factors. There can be no assurance that such statements will prove accurate. Results and future events could differ materially from those anticipated in such statements. Readers of this press release are cautioned not to place undue reliance on these "Forward-Looking Statements".

ABOUT RADISSON MINING: Radisson Mining is a Quebec-based exploration company, with an office in Toronto, Ontario, specializing in the discovery of gold, molybdenum and base metal deposits with an interest in thirteen properties in northwestern Quebec and four properties in northwestern Ontario. The main asset of Radisson, the O'Brien / Kewagama property, contains the former O'Brien Mine, the highest grade and the most important gold producer in the Cadillac Mining Camp when it was producing from the early 1930s to the mid 1950s.




--------------------------------------------------------------------------
--------------------------------------------------------------------------
Summary of Significant Intersections Infill Drill Program 36 East Zone
--------------------------------------------------------------------------
Hole From To Length From To Length Au Au
(feet) (feet) (feet) (meters) (meters) (meters) (opt) (gpt)
--------------------------------------------------------------------------
OB07-120 235.7 240.0 4.3 71.8 73.1 1.3 0.270 9.26
--------------------------------------------------------------------------
OB07-122 570.1 632.8 62.7 173.8 192.9 19.1 0.034 1.17
--------------------------------------------------------------------------
incl 612.6 616.8 4.2 186.7 188.0 1.3 0.193 6.62
--------------------------------------------------------------------------
OB07-124 217.4 218.3 0.9 66.3 66.5 0.3 0.538 18.45
--------------------------------------------------------------------------
and 244.2 245.2 1.0 74.4 74.7 0.3 0.657 22.53
--------------------------------------------------------------------------
and 252.6 256.8 4.2 77.0 78.3 1.3 0.129 4.42
--------------------------------------------------------------------------
OB07-126 596.3 597.4 1.1 181.7 182.1 0.3 0.573 19.65
--------------------------------------------------------------------------
OB07-129 451.3 453.6 2.3 137.5 138.3 0.7 0.213 7.30
--------------------------------------------------------------------------
OB07-130 286.9 290.9 4.0 87.4 88.7 1.2 0.121 4.15
--------------------------------------------------------------------------
OB07-132 155.1 156.5 1.4 47.3 47.7 0.4 0.725 24.86
--------------------------------------------------------------------------
0B07-134 593.6 596.2 2.6 180.9 181.7 0.8 0.377 12.93
--------------------------------------------------------------------------
OB08-136 626.6 631.5 4.9 191.0 192.5 1.5 0.105 3.60
--------------------------------------------------------------------------
OB08-137A 466.0 468.1 2.1 142.0 142.7 0.6 0.224 7.68
--------------------------------------------------------------------------
OBO8-138A 155.6 157.5 1.9 47.4 48.0 0.6 0.118 4.05
--------------------------------------------------------------------------
and 270.4 271.4 1.0 82.4 82.7 0.3 0.369 12.65
--------------------------------------------------------------------------
and 561.0 570.7 9.7 171.0 173.9 3.0 0.061 2.09
--------------------------------------------------------------------------
OB08-140A 722.7 725.2 2.5 220.3 221.0 0.8 0.116 3.98
--------------------------------------------------------------------------
0B08-141 394.0 395.4 1.4 120.1 120.5 0.4 0.188 6.45
--------------------------------------------------------------------------
and 596.5 597.7 1.2 181.8 182.2 0.4 0.393 13.47
--------------------------------------------------------------------------
and 656.8 660.2 3.4 200.2 201.2 1.0 0.140 4.80
--------------------------------------------------------------------------
OB08-142 594.4 597.3 2.9 181.2 182.0 0.9 0.357 12.24
--------------------------------------------------------------------------
and 759.3 762.4 3.1 231.4 232.4 0.9 0.144 4.94
--------------------------------------------------------------------------
OB08-143 569.2 572.2 3.0 173.5 174.4 0.9 0.132 4.53
--------------------------------------------------------------------------
and 654.2 658.3 4.1 199.4 200.6 1.2 0.155 5.31
--------------------------------------------------------------------------
and 669.3 673.1 3.8 204.0 205.2 1.2 0.278 9.53
--------------------------------------------------------------------------
OB08-144 550.8 552.1 1.3 167.9 168.3 0.4 0.107 3.67
--------------------------------------------------------------------------
OB08-145 356.0 358.8 2.8 108.5 109.4 0.9 0.132 4.53
--------------------------------------------------------------------------
and 437.2 438.5 1.3 133.3 133.6 0.4 0.437 14.98
--------------------------------------------------------------------------
OB08-146 257.2 260.1 2.9 78.4 79.3 0.9 0.146 5.01
--------------------------------------------------------------------------
and 341.9 343.4 1.5 104.2 104.7 0.5 0.491 16.83
--------------------------------------------------------------------------


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

Contact Information