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June 20, 2006
Duluth Metals Receives 43-101 Report with New Drill Results

Toronto, Ontario -- June 20, 2006 -- Wallbridge Mining Company Limited (TSX:WM) today announced that Duluth Metals Limited ("DML"), (formerly Wallbridge America Limited), the private company formed to finance exploration of the Maturi Extension Property situated in Minnesota, has received a NI 43-101 compliant report by Roscoe Postle Associates ("RPA") with new spring 2006 drill results. The presence of an extensive sheet of copper-nickel-PGE mineralization underlying large parts of the property has been confirmed on the basis of six new drill holes and fifteen1 historic holes on the property.

The Maturi Extension Property is strategically situated in the Duluth Complex, covering 2,570 acres directly east of Franconia Minerals Corporation's Maturi Deposit. DML completed 19,625 feet of diamond drilling within six holes between March to May, 2006. To date, the mineralization has been tested over a strike length of 3.25 kilometres. The mineralization extends as a south-easterly dipping tabular zone averaging about 120 feet thick from depths of about 1500 feet along the western property boundary to depths of about 3700 feet at the eastern limit of the drilling to date. There remains an additional 1.6 kilometres of property open for exploration and step-out drilling along the easterly trend.

Highlights from spring 2006 drilling

Two high priority areas requiring immediate follow-up have been highlighted by the spring 2006 drilling. These are the Western Area and the Eastern Exploration Area, which are separated by approximately 1.6 km.

Western Area
  • This is the area of advanced exploration where RPA believes there is the potential to develop and qualify a resource in the short term. It is located at the western end of the Maturi Extension Property, which is contiguous and down-dip to the east of Franconia Minerals Corporation's recently announced Inferred Resource (51 million tonnes at 0.74% copper and 0.28% nickel) known as the "Maturi Deposit".
  • Three drill holes tested the area. Holes MEX-002 and MEX-006 intersected wide zones of mineralization with MEX-002 intersecting 0.78 % copper, 0.28% nickel, and 0.969 grams of Total Precious Metals ("TPM") per tonne over a core length of 120 feet and MEX-006 intersecting 0.73 % copper, 0.25% nickel, and 0.607 grams of TPM per tonne over a core length of 220 feet (True thickness is estimated at about 90% of core length).
  • Recent drilling results are consistent with the grade of the historic holes in this area. To date, a total of 11 drill holes have been completed within this area at a spacing of about 400 metres within an area measuring about 2300 metres by 750 metres. All holes have intersected mineralization. Average grade of these holes is 0.73% copper, 0.26% nickel over an average thickness of 120 feet. (See Table 1 below).
  • Taking into account the successful results of the recent drilling program, Roscoe Postle Associates recommended a revised, more advanced Phase One and Phase Two drill program to qualify a potential resource by bringing drill spacing to about 200 metres, and closer if required. Based on the areal extent and average known thickness of the mineralization there is potential to define in excess of 100 million tonnes of mineralization within this area.

      TABLE 1:  ASSAYS FROM DRILL HOLES IN THE WESTERN AREA
      (as compiled from historic data @ 0.6% copper cut-off)

                  From        To   Length      %        %
      Hole      (feet)    (feet)   (feet)  Copper   Nickel
      -------  -------  --------  -------  ------   ------
      11533    1005.00   1130.00   125.00    0.73    0.25
      40912    1210.00   1405.00   195.00    0.66    0.25
      40913    2535.00   2585.00    50.00    1.02    0.39
      DU-01    2540.00   2610.00    70.00    0.65    0.25
      DU-05    1150.00   1220.00    70.00    0.95    0.28
      DU-18    1750.00   1890.00   140.00    0.72    0.29
      DU-19    1480.00   1580.00   100.00    0.71    0.26
      DU-20    2160.00   2270.00   110.00    0.74    0.26
      K-04     1336.00   1469.50   133.50    0.64    0.23
      MEX-002  2207.00   2327.00   120.00    0.78    0.28
      MEX-006  1996.00   2206.00   210.00    0.73    0.25
               
      Average                      120.32    0.73    0.26

Eastern Exploration Area
  • The Eastern Exploration Area is situated between historic hole DU-04 and the eastern property boundary about one mile to the east. This area was tested by hole MEX-003 which is located about 1300 feet southeast of DU-04. Drill hole MEX-003 intersected 160 feet of 0.70% copper, 0.18% nickel, and 0.716 grams of TPM per tonne, including 75 feet of 0.84% copper, 0.21% nickel, and 0.838 grams per tonne TPM. Included in this higher grade section are two higher grade intervals of 25 feet of 1.07% copper, 0.25% nickel, and 1.011 grams of TPM per tonne and 20 feet of 0.97% copper, 0.25% nickel, and 0.996 grams of TPM per tonne. (True thickness is estimated at about 90% of core length).
  • The results of hole MEX-003 appear to confirm the general trend to higher grade towards the east as previously indicated by historic hole DU-04 which returned 90 feet of 0.96% copper, 0.18% nickel, and 1.42 grams of TPM (0.81 g Pd/t, 0.34 g Pt/t, and 0.27 g Au/t).
  • A high priority exploration area is situated in the 1600 metres (1 mile) between holes DU-04 and MEX-003 and the eastern boundary of the property. This area will be targeted once DML has completed its planned IPO. Initial drilling will test this area at 400 metre (quarter mile) spacing.
  • Current plans call for completion of the listing and the IPO by the end of July, after which a Phase 1, 35,000 feet drill program will commence, employing two drills. These drills will operate in the Western Area, and a third drill will be used to follow-up on the higher grade mineralization encountered in the Eastern Exploration Area.

                                TABLE 2: SPRING 2006 DRILL ASSAYS
                             (as per RPA Report dated May 31, 2006)

                          From       T   Length Copper Nickel   Co      Pd      Pt      Au     TPM     Ag
Hole   Intersection      (Feet)   (Feet) (Feet)    (%)    (%)  ppm     ppm     ppm     ppm     ppm    ppm
---------------------------------------------------------------------------------------------------------
MEX-1                    3536.5   3593.0   56.5   0.52   0.16   78   0.463   0.207   0.090   0.761   1.83
MEX-1   @ 0.5% cut-off   3563.0   3593.0   30.0   0.62   0.16   84   0.452   0.196   0.086   0.733   2.23
                                                 
MEX-2   @ 0.5% cut-off   2207.0   2327.0  120.0   0.78   0.28  108   0.589   0.250   0.129   0.969   2.76
MEX-2   including        2252.0   2287.0   35.0   0.89   0.32  117   0.604   0.280   0.115   0.999   3.16
                                                 
MEX-3   @ 0.5% cut-off   3603.0   3763.0  160.0   0.70   0.18   84   0.428   0.198   0.090   0.716   2.85
MEX-3   including        3628.0   3703.0   75.0   0.84   0.21   95   0.490   0.240   0.108   0.838   3.16
MEX-3   which includes   3628.0   3653.0   25.0   1.07   0.25  106   0.573   0.314   0.124   1.011   3.98
MEX-3   and              3683.0   3703.0   20.0   0.97   0.25  107   0.606   0.250   0.140   0.996   3.05
                                                 
MEX-4   @ 0.5% cut-off   2812.0   2827.0   15.0   0.73   0.21   93   0.511   0.227   0.111   0.848   2.87
    and                                            
MEX-4   @ 0.5% cut-off   2902.0   2917.0   15.0   0.58   0.19   77   0.387   0.173   0.095   0.655   2.40
                                                 
MEX-5                    3192.0   3287.0   95.0   0.26   0.09   69   0.219   0.115   0.056   0.390   0.94
MEX-5   @ 0.5% cut-off   3242.0   3247.0    5.0   0.54   0.17   60   0.427   0.212   0.083   0.722   0.85
                                                 
MEX-6   @ 0.5% cut-off   1996.0   2216.0  220.0   0.73   0.25  114   0.362   0.166   0.079   0.607   2.59
    including            2116.0   2151.0   35.0   0.93   0.30  128   0.477   0.218   0.106   0.801   3.29
With the six hole spring 2006 program, half core samples were prepared at ALS Chemex Ltd. Laboratories in Thunder Bay and then shipped to its analytical facilities in Vancouver. Samples were analyzed for Au, Pt, Pd using a standard fire assay with an ICP finish and for 27 base metals and trace elements using a four acid (near total) digestion and a combination of ICPMS and ICPAES. ICP overlimits were re-analyzed using sodium peroxide fusion, acid dissolution followed by ICPAES.

Doug Hunter, P.Geo. Senior Vice-President of Duluth Metals Limited is the Qualified Person for Wallbridge Mining Company Limited and Duluth Metals Limited, in accordance with NI 43-101 of the Canadian Securities Administrators, and is responsible for the technical content of this press release and quality assurance of the exploration data and analytical results.

About Duluth Metals Limited
Duluth Metals Limited is a private company that was formed to finance the exploration and development of the copper-nickel-PGE mineralization on Walbridge's Maturi Extension Project in Minnesota. DML will be filing imminently a preliminary prospectus with the Ontario, Alberta and British Columbia Securities Commissions in connection with its IPO.

Wallbridge Mining Company Limited currently holds 10 million shares in DML, with Wallbridge shareholders holding approximately 11,850,000 Special Warrants convertible for no additional consideration into free trading shares on completion of the IPO, which is being targeted for July of this year.

About Wallbridge
Wallbridge Mining Company Limited explores for and develops nickel, copper and platinum group element (PGE) deposits. The Company's principal properties are located in the Sudbury Basin in Ontario. The Sudbury area hosts the world's largest concentration of nickel deposits and is currently the most active mining camp in North America. Wallbridge also has a major shareholding in DML, which has a significant property position in the rapidly emerging Duluth base metal camp.

For Further Information
Please visit the Company's website at www.wallbridgemining.com, or contact:

Wallbridge Mining Company Limited
Alar Soever, President
Tel: (705) 682-9297
Email: asoever@wallbridgemining.com


CHF Investor Relations
Mara Strazdins, P.Geo., Vice President
Tel: (416) 868-1079 ext. 222
Email: mara@chfir.com

Duluth Metals Limited
Rick Sandri, President & CEO
Tel: (661) 340-7755
Email: hsandri@selectresources.us

This document may contain forward-looking statements relating to Wallbridge's operations or to the environment in which it operates. Such statements are based on operations, estimates, forecasts and projections. They are not guarantees of future performance and involve risks and uncertainties that are difficult to predict and may be beyond Wallbridge's control. A number of important factors could cause actual outcomes and results to differ materially from those expressed in forward-looking statements, including those set forth in other public filings. In addition, such statements relate to the date on which they are made. Consequently, undue reliance should not be placed on such forward-looking statements. Wallbridge disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, save and except as may be required by applicable securities laws.