Radisson Mining Resources Inc.
TSX VENTURE : RDS

Radisson Mining Resources Inc.

December 20, 2007 08:00 ET

Radisson Mining Reports High-Grade Gold Assays on the O'Brien / Kewagama Drill Program

ROUYN-NORANDA, QUEBEC--(Marketwire - Dec. 20, 2007) - Radisson Mining Resources (TSX VENTURE:RDS) is pleased to report that, as of December 13, 2007, 11 holes were completed (OB07-120 to 128, OB07-132 and OB07-133) for a total of 4,219 ft (1,286 m) in the 7,000 m. drill program on the Company's O'Brien / Kewagama properties located about one mile north of the town of Cadillac on Highway 117, approximately 35 miles east of Rouyn-Noranda, Quebec. This program was announced in the Company's news release of October 31, 2007.

In lieu of an underground detailed drilling and bulk sampling program, the surface drill program is intended to define, between surface and the 500 ft level, the resources blocks of the veins identified in the 43-101 resources report on the 36 East Zone (Luke Evans, Scott Wilson RPA May 2007). The 36 East Zone is situated about 2,500 ft. east of the original producing zone of the O'Brien Mine. When the O'Brien Mine was in production it was the highest grade gold producing mine in the Cadillac Mining Break. As per the 43-101 report, Radisson Mining has intersected comparable high-grade gold ore in the 36 East Zone.

The 43-101 report estimated Indicated Resources on the 36 East Zone, using a 0.17 oz/ton gold cut-off 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."

Assays now have been received for 7 of the 11 holes drilled, to date, of approximately 45 holes to be drilled in this 7,000 m. drill program. It is worth noting the nature of the 36 East Zone, as stated in the 43-101 report, i.e. "The main mineralized structures ("veins") are generally narrow, ranging in true thicknesses from a few inches to 22 ft., but have good continuity both horizontally and vertically". The initial holes of this latest drill program intersected gold mineralization and confirm the high grade nature of the gold mineralization of the 36 East Zone. Here are the highlights of the assay results received to date:



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Hole Long Lat Length From To Length Au Depth
(E) (N) Dip (ft) (ft) (ft) (ft) (oz/t) Vein (ft)
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OB07-120 3 400 395 -51 331 235.7 240.0 4.3 0.28 V4 180
(folded)
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OB07-121 3 400 395 -56 361 140.7 144.4 3.7 0.27 qz 115
vein
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OB07-122 3 480 110 -50 646 612.6 616.8 4.2 0.19 V4 455
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OB07-124 3 485 395 -57 272 216.4 217.3 0.9 0.64 V3 175
244.2 245.2 1.0 0.64 V4 198
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OB07-132 3 560 390 -63 263 155.1 156.5 1.4 0.61 qz 130
vein
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The Radisson O'Brien / Kewagama exploration program is planned and supervised jointly by Dale M Hendrick, P.Eng., Chairman of the Board and Technical Consultant to Radisson Mining plus Raynald Vincent, P.Eng.(Quebec), Consultant and Qualified Person as per National Requirement 43-101 Policy.

All drill cores are NQ in size and assays were done on sawn half-cores, with the second half kept for future reference. 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.

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.

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. Radisson now has established a new zone, the 36 East Zone, 2,500 ft. east of the old producing zone of the O'Brien Mine, with comparable high grades of gold. The Company is carrying on an advanced exploration program on this property. In the 43-101 report, Scott Wilson RPA opined, "there is excellent potential to increase the Zone 36 East resources above the 2,000 Level and to discover new resources further at depth and along strike further to the east".

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

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