Duluth Metals Expands Higher Grade Area on Nokomis Deposit

TORONTO, April 22, 2010 - Duluth Metals Limited ("Duluth Metals") (TSX:
DM) (TSX:DM.U) today announced results for six holes drilled in the 2010
Winter Drilling Program on the Nokomis Deposit, Ely Minnesota. Significantly
higher grade intersections have been returned for five of the holes, which
together with previously reported hole MEX-158, indicates the potential for a
larger higher grade area situated in the north central section of the
currently defined Nokomis Deposit.

These six drill holes (MEX 157, 158, 159, 160, 161 and 164) are located
in proximity to previously announced higher grade zones (see press release
dated December 11, 2009) which were highlighted in the most recent NI 43-101
Resource Estimate dated December 2009. A map illustrating the location of
these six drill holes in relation to the higher grade areas published in the
December 11, 2009 press release can be found on the Company website under
this press release at www.duluthmetals.com.

     Highlights of the higher grade area include:

     -   MEX-157 intersected 30 feet of 1.048% copper, 0.251% nickel, 3.2 g/t
         silver and 1.894 grams per tonne (g/t) Total Precious Metals
         (TPM (equal sign) Platinum+Palladium+Gold) (Cu Equivalent(x) of
         2.561%) within 75 feet of 0.919% copper, 0.211% nickel, 2.7 g/t
         silver and 1.141 g/t TPM (Cu Equivalent(x) of 2.118%), all within a
         125.0 foot section of 0.766% copper, 0.179% nickel, 2.3 g/t silver
         and 1.190 g/t TPM (Cu Equivalent(x) of 1.778%)

     -   MEX-159 intersected 20 feet of 1.062% copper, 0.306% nickel, 3.9 g/t
         silver and 0.937 g/t TPM (Cu Equivalent(x) of 2.366%) within a
         160.0 foot section of 0.846% copper, 0.242% nickel, 2.7 g/t silver
         and 0.761 g/t TPM (Cu Equivalent(x) of 1.87%)

     -   MEX-160 intersected 20 feet of 0.864% copper, 0.152% nickel, 3.4 g/t
         silver and 0.960 g/t TPM (Cu Equivalent(x) of 1.702%) within a
         180 foot section of 0.604% copper, 0.178% nickel, 2.1 g/t silver and
         0.774 g/t TPM (Cu Equivalent(x) of 1.451%)

     -   MEX-161 intersected 50 feet of 1.070% copper, 0.295% nickel, 3.9 g/t
         silver and 1.139 g/t TPM (Cu Equivalent(x) of 2.402%) within 75 feet
         of 0.925% copper, 0.260% nickel, 3.4 g/t silver and 0.964 g/t TPM
         (Cu Equivalent(x) of 2.082%), all within a 155.0 foot section of
         0.698% copper, 0.189% nickel, 2.7 g/t silver and 0.673 g/t TPM
         (Cu Equivalent(x) of 1.532%)

     -   MEX-164 intersected 40 feet of 0.975% copper, 0.275% nickel, 8.9 g/t
         silver and 0.859 g/t TPM (Cu Equivalent(x) of 2.133%) within 85 feet
         of 0.889% copper, 0.236% nickel, 5.6 g/t silver and 0.737 g/t TPM
         (Cu Equivalent(x) of 1.885%), all within a 120 foot section of
         0.742% copper, 0.200% nickel, 4.3 g/t silver and 0.621 g/t TPM
         (Cu Equivalent(x) of 1.591%)

Previously reported hole MEX-158, intersected 70.0 feet of 1.189%
copper, 0.328% nickel, 3.6 g/t silver and 1.404 g/t TPM (Cu Equivalent(x) of
2.69%) within a 180.0 foot section of 0.913% copper, 0.248% nickel, 2.9 g/t
silver and 1.039 g/t TPM (Cu Equivalent(x) of 2.06%).

A more detailed summary of the assay results for MEX-156, 157, 159, 160,
161 and 164 can be found in the table below. True width is estimated at about
90% of core length.

                                                                         CU-
                          FROM    TO   LENGTH  COPPER  NICKEL   TPM(x)  EQ(x)
     HOLE       ZONE     (feet) (feet) (feet)    (%)     (%)     (g/t)   (%)

     MEX-  (at)0.3% Cu
     0156   cut-off       3193   3218    25     0.527   0.228   0.555   1.436

     MEX-  (at)0.3% Cu
     0157   cut-off       2832   2957   125     0.766   0.179   1.190   1.778
           (at)0.5% Cu
            cut-off       2832   2907    75     0.919   0.211   1.410   2.118
             including    2857   2887    30     1.048   0.251   1.894   2.561
           (at)0.5% Cu
            cut-off       2927   2957    30     0.642   0.157   1.083   1.534

     MEX-  (at)0.3% Cu
     0159   cut-off       2247   2407   160     0.846   0.242   0.761   1.871
           (at)0.5% Cu
            cut-off       2252   2407   155     0.860   0.244   0.768   1.892
             including    2252   2272    20     1.062   0.306   0.937   2.366

     MEX-  (at)0.3% Cu
     0160   cut-off       2767   2947   180     0.604   0.178   0.774   1.451
           (at)0.5% Cu
            cut-off       2792   2947   155     0.644   0.186   0.853   1.549
             including    2922   2942    20     0.864   0.152   0.960   1.702
                                                                        0.006

     MEX-  (at)0.3% Cu
     0161   cut-off       2243   2398   155     0.698   0.189   0.673   1.532
           (at)0.5% Cu
            cut-off       2243   2318    75     0.923   0.260   0.964   2.082
           including      2253   2303    50     1.070   0.295   1.139   2.402
           (at)0.5% Cu
            cut-off       2338   2373    35     0.617   0.136   0.520   1.231

     MEX-  (at)0.3% Cu
     0164   cut-off       1922   2042   120     0.742   0.200   0.621   1.591
           (at)0.5% Cu
            cut-off       1922   2007    85     0.889   0.236   0.737   1.885
           including      1922   1962    40     0.975   0.275   0.859   2.133
           (at)0.5% Cu
            cut-off       2087   2127    40     0.600   0.144   0.456   1.215
           (at)0.3% Cu
            cut-off       2147   2172    25     0.405   0.099   0.306   0.834
           (at)0.3% Cu
            cut-off       2232   2252    20     0.512   0.139   0.470   1.116

Complete gold, platinum, palladium and silver assays for MEX-156, 157,
159, 160, 161 and 164 are as follows:

                       FROM    TO   LENGTH  GOLD  PLATINUM  PALLADIUM  SILVER
     HOLE     ZONE    (feet) (feet) (feet)  (g/t)   (g/t)     (g/t)     (g/t)

     MEX-  (at)0.3%
     0156   Cu
            cut-off    3193   3218    25   0.076    0.145     0.335      1.5

     MEX-  (at)0.3%
     0157   Cu
            cut-off    2832   2957   125   0.165    0.321     0.705      2.3
           (at)0.5%
            Cu
            cut-off    2832   2907    75   0.190    0.391     0.829      2.7
           including   2857   2887    30   0.292    0.527     1.076      3.2
           (at)0.5%
            Cu
            cut-off    2927   2957    30   0.177    0.270     0.636      2.1

     MEX-  (at)0.3%
     0159   Cu
            cut-off    2247   2407   160   0.110    0.186     0.465      2.7
           (at)0.5%
            Cu
            cut-off    2252   2407   155   0.113    0.185     0.470      2.7
           including   2252   2272    20   0.115    0.267     0.555      3.9

     MEX-  (at)0.3%
     0160   Cu
            cut-off    2767   2947   180   0.112    0.212     0.449      2.1
           (at)0.5%
            Cu
            cut-off    2792   2947   155   0.123    0.236     0.494      2.2
            including  2922   2942    20   0.137    0.256     0.567      3.4

     MEX-  (at)0.3%
     0161   Cu
            cut-off    2243   2398   155   0.095    0.172     0.407      2.7
           (at)0.5%
            Cu
            cut-off    2243   2318    75   0.131    0.244     0.590      3.4
           including   2253   2303    50   0.163    0.286     0.690      3.9
           (at)0.5%
            Cu
            cut-off    2338   2373    35   0.087    0.126     0.307      2.7

     MEX-  (at)0.3%
     0164   Cu
            cut-off    1922   2042   120   0.097    0.153     0.371      4.3
           (at)0.5%
            Cu
            cut-off    1922   2007    85   0.123    0.173     0.441      5.6
           including   1922   1962    40   0.159    0.198     0.502      8.9
           (at)0.5%
            Cu
            cut-off    2087   2127    40   0.059    0.111     0.285      2.1
           (at)0.3%
            Cu
            cut-off    2147   2172    25   0.045    0.090     0.171      1.5
           (at)0.3%
            Cu
            cut-off    2232   2252    20   0.065    0.116     0.289      1.7

"These 2010 Winter Drill Program results indicate that some of the
previously defined, higher grade areas within the Nokomis Deposit are growing
in size. Increasing tonnage in our higher grade areas will clearly add to the
already positive economics of the Nokomis Project", stated Dr. Henry J.
Sandri, President and CEO of Duluth Metals. "The focus of our current 2010
Spring Drill Program is to continue to further evaluate and quantify theses
notable higher grade copper, nickel, platinum, palladium, gold and silver
zones in portions of the Nokomis Deposit."

For the 2010 Winter Drill Program, half core samples are being prepared
at ALS Chemex Ltd. laboratories in Thunder Bay and then shipped to its
analytical facilities in Vancouver. Samples are being analyzed for Au, Pt,
and Pd using a standard fire assay with an ICP finish and for 27 other
elements using a four acid (near total) digestion and a combination of ICPMS
and ICPAES. ICP over limits were re-analyzed using sodium peroxide fusion,
acid dissolution followed by ICPAES. The remaining half core samples are
being stored in Minnesota.

(x) Note - Copper Equivalent is based on US metal prices of: Copper -
$1.75/lb, Nickel - $7.00/lb, Cobalt - $10.00/lb, Gold - $600/oz, Platinum -
$1,100/oz, Palladium - $350/oz and Silver - $8.50/oz, and the methodology
with metallurgical recoveries, refining costs and other charges being
considered for all metals in accordance with the Net Smelter Return Factors
contained in the January 22, 2008, NI 43-101 Scoping Study produced by Scott
Wilson RPA.

Duluth Metals is pleased to report that the definitive shareholders
agreement with Antofagasta plc is expected to be signed by the end of June
and both companies are progressing with organizational matters related to the
joint venture which was announced on January 14, 2010

David Oliver, P. Geo. and Duluth Project Manager is the Qualified
Person, 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

Duluth is committed to acquiring, exploring and developing copper,
nickel and platinum group metal (PGM) deposits. Duluth's principal property
is the Nokomis Deposit located within the rapidly emerging Duluth Complex
mining camp in northeastern Minnesota. On January 14, 2010, Duluth announced
the signing of a binding heads of agreement with Antofagasta plc on a joint
venture development of the Nokomis Deposit. The Duluth Complex hosts one of
the world's largest undeveloped repositories of copper, nickel and PGMs,
including the world's third largest accumulation of nickel sulphides, and
one of the world's largest accumulations of polymetallic copper and
platinum group metals.

This document may contain forward-looking statements (including
"forward-looking statements" within the meaning of the US Private Securities
Litigation Reform Act of 1995) relating to Duluth'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 Duluth'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. Duluth 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.

For further information: Mara Strazdins, Director of Corporate
Communications, at mstrazdins@duluthmetals.com or at +1-416-369-1500; or
Henry Sandri, President and CEO, at hsandri@duluthmetals.com; Minnesota
corporate office: telephone +1-651-389-9990; Web Page:
www.duluthmetals.com

For further information: Mara Strazdins, Director of Corporate Communications, at mstrazdins at duluthmetals.com or at +1-416-369-1500; or Henry Sandri, President and CEO, at hsandri at duluthmetals.com; Minnesota corporate office: telephone +1-651-389-9990