Last updated on April 18, 2014 at 1:21 EDT

Duluth Metals continues to identify new mineralized areas on exploration lands

March 20, 2013
        --  In total four new areas of mineralization discovered since the
            start-up of drilling (October 2012) with two new areas reported
            in this press release
        --  Part of a long-term multi-phase drilling program over an
            extensive land package of approximately 8,850 acres of
            favorable geology adjacent to Duluth's Twin Metals Project
        --  Currently completing Phase 1 of the exploration program with
            Phase 2 to start-up in the spring/summer
        --  Program continues to target Nickel Lake Macrodike as well as
            Platinum Group mineralization on the eastern margin of the
            South Kawishiwi Intrusion

TORONTO, March 20, 2013 /PRNewswire/ – Duluth Metals Limited (“Duluth”) (TSX: DM) (TSX:DM.U) is pleased to present results from Phase 1 of the multi-phase
exploration program currently underway on Duluth’s 100% owned
exploration properties in the Duluth Complex, northeast Minnesota.  In
addition to the two new areas of mineralization press released by the
Company on February 5, 2013, and referred to as Areas 1 and 2, the
Phase 1 program has found significant mineralization in two other new
areas referred to Areas 3 and 4:

        --  Area 3 - In the Northeast portion of the Nickel Lake Macrodike
            (NLM), drilling has found copper-nickel-PGE mineralization
            along the northern wall of the Macrodike.
        --  Area 4 - Along the eastern edge of the South Kawishiwi
            Intrusion (SKI), drilling has identified a planar structure
            with predominant copper mineralization in the Bogberry Lake

Furthermore, continued drilling in the Southwest portion of the NLM and
previously reported as Area 2, continues to show mineralization along the north wall of the
Macrodike. (see press release dated Feb 05, 2013, Duluth Metals Identifies Two New Mineralized Areas on Exploration Lands at www.duluthmetals.com for earlier results)

The Phase 1 portion of the exploration program has consisted of geologic
mapping, geochemistry, geophysics, and initial drill testing of targets
on the properties which cover 8,850 acres of favorable geology adjacent
to Duluth’s Twin Metals Project (Fig. 1).  Phase 2 of the program will
take advantage of the spring break-up to compile and interpret
geological data and define future drill targets for the balance of
2013.  Drilling will also target the deeper portions of the Nickel Lake

“The program has been successful identifying four areas of
mineralization along the eastern edge of the SKI and the NLM that carry
significant metal values and that demand additional work. This is a
huge system, with the very large qualified Twin Metals Project resource
identified in one area of the SKI, and the system has the potential to
provide additional large areas of mineralization.” commented Dean
Peterson, Senior Vice President-Exploration of Duluth Metals.

Vern Baker, President of Duluth Metals commented, “We are continuing to
explore this large parcel of land with a long term multi-phase drilling
program. As the four identified areas of mineralization extend over a
small region of the land package we will be continuing to compile
drilling, geological and geophysical data for the land holdings and
drill other strategic targets.  Two of our main target areas are the
deeper portions of the NLM and the “delta” area west of the mouth of
the NLM as the Phase 1 drilling has been concentrated in the upper
portions of the Macrodike.”

Area Location Map

The new areas of mineralization, Areas 1, 2, 3 and 4, are shown in
Figure 1.

NLM Drilling Overview

Drilling to date has confirmed that the NLM is a southwest-northeast
striking complex of intrusives, dipping steeply toward the southeast.
The southeastern flank of the NLM is occupied by relatively flat-lying,
layered gabbroic and troctolitic intrusions, forming a keel-shaped body
akin to the Great Dyke. The northwestern flank of the NLM was formed by
multiple pulses of magma, including heterogeneous ultramafic and
inclusion- and sulphide-bearing phases, intruded as vertical sheet-like

As previously reported, initial drilling in the NLM has confirmed the
existence of sulphide-bearing magmas in the feeder conduit to the
mineralized SKI. In addition, this drilling has provided important
stratigraphic data critical to developing a robust geological and
geophysical model for exploring for high grade Ni-rich sulphide
mineralization in and near the mouth of the NLM.

Area 3 – Northeast NLM Mineralization

In Northeast NLM Area 3, drilling has intersected multiple zones of
Cu-Ni-PGE sulfide mineralization. The three holes completed to date,
13-DM-37, 13-DM-40, and 13-DM-43, were all collared in mineralization.
13-DM-37 and 13-DM-40 were drilled to the north and vertically,
respectively, and each intersected significant intersections of
Cu-Ni-PGE mineralized material. Following up on these initial results,
13-DM-43 was drilled down-dip (-50° inclination) in the NLM, attempting
to parallel the mineralized zone to depth. In addition to the
near-surface mineralization, 13-DM-43 intersected two additional
mineralized zones at depth. Following these encouraging results,
13-DM-48 is drilling a more steeply inclined hole (-75° inclination) in
the same zone. In addition to the near-surface mineralization, 13-DM-48
the highest grade Cu-Ni-PGE mineralization identified thus far in the

Highlights of drilling include: (True thickness unknown.)

        --  13-DM-037 returned a 89.5 foot intersection of 0.41% Cu with
            0.142 g/t TPM
        --  13-DM-040returned a 187 foot intersection of 0.44% Cu with
            0.176 g/t TPM.
        --  13-DM-043 returned a 252 foot intersection of 0.38% Cu with
            0.176 g/t TPM, including 18.6 feet of 0.57% Cu, 0.11% Ni, and
            0.468 g/t TPM.
        --  13-DM-048returned a 204.9 foot intersection of 0.37% Cu and
            0.144 g/t TPM including 30 feet of 0.56% Cu, 0.11% Ni and 0.274
            g/t TPM, as well as a 6 foot intersection of 2.059 g/t TPM and
            a 5 foot intersection of 0.702 g/t TPM.  Note: This hole is
            currently being drilled and additional assays are pending.

    Full assay results are shown in the following Table 1:

    Drill        From      To     Thickness   Cut-off   Cu     Ni     Pt      Pd      Au      TPM
    Hole         (ft)     (ft)      (ft)                %      %      g/t     g/t     g/t     g/t

                 16.2    105.7       89.5     @0.3%     0.41   0.09   0.038   0.075   0.030   0.142
    13-DM-037                                 Cu

                  6.5    193.7       187.2    @0.3%     0.44   0.10   0.052   0.091   0.033   0.176
    13-DM-040                                 Cu

                   8     213.3       205.3    @0.3%     0.39   0.07   0.046   0.079   0.035   0.161
    13-DM-043                                 Cu

                194.7    213.3       18.6     @0.5%     0.57   0.11   0.134   0.241   0.094   0.468
    including                                 Cu

                831.5    863.3       31.8     @0.3%     0.35   0.07   0.025   0.050   0.021   0.096
    13-DM-043                                 Cu

                1791.7    1895       103.3    @0.3%     0.34   0.07   0.024   0.066   0.024   0.113
    13-DM-043                                 Cu

                 1935    1996.3      61.3     @0.3%     0.49   0.09   0.045   0.118   0.040   0.202
    13-DM-043                                 Cu

                1948.5   1982.5        34     @0.5%     0.60   0.11   0.054   0.136   0.044   0.234
    including                                 Cu

                2047.8   2082.6      34.8     @0.3%     0.45   0.09   0.037   0.100   0.038   0.175
    13-DM-043                                 Cu

                 23.7    228.6       204.9    @0.3%     0.37   0.08   0.035   0.076   0.033   0.144
    13-DM-048                                 Cu

                  121      151         30     @0.5%     0.56   0.11   0.068   0.145   0.060   0.274
    including                                 Cu

                828.4    834.4          6     @0.5      0.79   0.18   0.543   1.080   0.436   2.059
    13-DM-048                                 g/t TPM

                  853      858          5     @0.5      0.15   0.02   0.405   0.275   0.022   0.702
    13-DM-048                                 g/t TPM

    Note - 13-DM-048 is currently being drilled and additional assays are pending.

Area 4 – Bogberry Lake Mineralization along the eastern edge of the SKI

Drilling in Area 4 targeted a flat-lying conductive anomaly identified
in an airborne geophysical survey. Drilling identified a flat-lying
zone characterized by a graphitic layer overlying chalcopyrite
mineralization. The zone has been intersected by all seven holes
completed to date. The mineralization is hosted by anorthositic
wallrock adjacent to the eastern margin of the SKI, and is
characterized by a different tenor from most other mineralization seen
thus far in the SKI. Mineralization corresponding to the main
conductive body is extremely low in PGEs, however 13-DM-36 in the
northern part of the area returned higher grade PGEs, and to the south
drilling and rock sampling has found PGE-enriched zones. These results
suggest mobilization and fractionation of sulphidic Cu-Ni-PGE bearing
fluids into the anorthositic wallrock of the SKI, and highlight the
potential for high grade PGE mineralization in the wallrock of the
mineralized SKI.

Highlights of drilling include: (True thickness estimated at 65% of the
cored interval.)

        --  13-DM-027 returned a 44.4 foot intersection of 0.35% Cu.
        --  13-DM-036returned a 3.6 foot intersection of 0.65% Cu with
            0.811 g/t TPM.

    Full assay results are shown in Table 2:

    Drill       From    To      Thickness   Cut-off   Cu     Ni     Pt      Pd      Au      TPM
    Hole        (ft)    (ft)      (ft)                %      %      g/t     g/t     g/t     g/t

    12-DM-019   726.4   786.0      59.6       @0.2%   0.23   0.05   0.004   0.005   0.006   0.015

    12-DM-023   828.4   857.8      29.4       @0.2%   0.24   0.04   0.009   0.031   0.008   0.049

    12-DM-027   689.7   734.1      44.4       @0.3%   0.35   0.08   0.014   0.014   0.017   0.045

    12-DM-027   849.7   859.4       9.7       @0.3%   0.44   0.05   0.024   0.015   0.026   0.065

    12-DM-028   637.5   660.7      23.2       @0.2%   0.23   0.05   0.003   0.009   0.007   0.018

    13-DM-032   696.7   735.2      38.5       @0.2%   0.22   0.03   0.009   0.010   0.007   0.026

    13-DM-032   797.7   882.3      84.6       @0.2%   0.21   0.05   0.011   0.010   0.010   0.030

    13-DM-035   644.4   648.3       3.9       @0.3%   0.34   0.08   0.017   0.021   0.016   0.054

    13-DM-036   717.5   721.1       3.6       @0.3%   0.65   0.04   0.321   0.333   0.157   0.811

Additional holes in Area 2 – Nickel Lake Macrodike Mineralization

Drilling in southwest NLM (Area 2) has been focused on following
previously reported intercepts of Cu-Ni-PGE bearing sulphide
mineralization previously reported in holes 12-DM-17 and 12-DM-18.

Significant widths of mineralization in the NLM area have been
identified both in surface outcrop and two additional drill holes. 
Similar to the previously reported results, this material is
characterized by a high Cu:Ni ratio, suggesting sulphide fractionation
occurred in the NLM. Highlights from the latest drilling to date are as
follows: (True thickness is estimated at about 95% of core length.)

        --  12-DM-022 returned a 240 foot intersection of 0.30% Cu, 0.06%
            Ni and 0.17 g/t TPM
        --  12-DM-025 returned a 219 foot intersection of 0.33% Cu, 0.06%
            Ni and 0.18 g/t TPM

The Cu-Ni-PGE mineralization intersected in four drill holes to date is
flanked to the southeast by a second sulphide mineralized phase. This
mineralization has been intersected in three drill holes, and while low
in grade, has a distinctly higher Ni tenor than other sulphide
mineralization identified in the NLM. This material, characterized by a
low Cu:Ni, provides further evidence indicating the NLM was a dynamic
magma conduit that saw multiple pulses of sulphide-bearing magma during
the intrusion of the SKI.

    Full assay results are shown in the followingTable 3:

    Drill       From    To      Int     Cut-off   Cu     Ni     Pt      Pd      Au      TPM     Notes
    Hole        (ft)    (ft)    (ft)              %      %      g/t     g/t     g/t     g/t

    12-DM-021   39.9    274.0   234.1             0.12   0.05   0.016   0.026   0.009   0.050        Low

    12-DM-022   125.0   365.0   240.0     @0.3%   0.31   0.06   0.048   0.080   0.040   0.168

    12-DM-025   35.9    210.6   174.7             0.19   0.06   0.029   0.061   0.027   0.117        Low

    12-DM-025   243.8   463.3   219.5     @0.3%   0.33   0.06   0.050   0.085   0.047   0.182

    13-DM-026   62.4    294.6   232.2             0.10   0.04   0.011   0.019   0.006   0.036        Low

Ongoing drilling efforts are aimed at demonstrating the continuity of
this mineralization on strike and at depth, as well as following this
mineralization to deeper sections of the NLM.  Future drilling efforts
within deeper sections of the NLM will focus on looking for higher
grade mineralization analogous to that found in the Maturi Deposit and
potential concentrations of Ni-rich massive sulphide. Drilling the most
prospective area for potential concentrations of massive sulphide at
the mouth of the NLM will require drier road building conditions in
order to access that area.

Area 1 – East Shore PGE Mineralization

Exploration work is also continuing on the first new area of
mineralization referred to as Area 1.  PGE mineralization within this
area along the eastern side of the SKI and within the adjacent
anorthositic rocks on the East Shore Property was previously reported
in the Company’s February 5, 2013 press release.  The near term focus
is to compile and analyze the geological and assay data from both
drilling as well as surface mapping and sampling in order to determine
the nature and geometry of this mineralization, which is unusual in
that it is highly enriched in PGEs relative to copper.

Ongoing Exploration Program

Duluth is continuing with an extensive exploration program for the
remainder of 2013.  The spring season will see a reduction in drilling
activity as sites become difficult to access due to the spring melt. 
This press release can also be found on the Company website at www.duluthmetals.com.

About the Sampling

Duluth Metals adheres to a rigorous QA/QC program as a part of sampling
procedures throughout the drill program. Duplicate, blank, and
reference standards are inserted into the sample stream prior to
submittal the laboratory. Half core samples are crushed and pulverized
at ALS Minerals in Thunder Bay, Ontario, and then shipped to its
analytical facilities in Vancouver, British Columbia. Samples are
analyzed for Au, Pt, and Pd using a 30 gram fire assay with an ICP-AES
finish, and for Cu, Ni, and other trace elements using a four acid
(near total) digestion and a combination of ICP-MS and ICP-AES
finishes. Overlimits are re-analyzed using sodium peroxide fusion, acid
dissolution, followed by an ICP-MAES finish. The remaining half core
samples are stored in Minnesota.

Phillip Larson, P. Geo. is the Qualified Person for Duluth Metals and
Senior Geologist for Duluth Metals, in accordance with NI 43-101 of the
Canadian Securities Administrators, and is responsible for Duluth
Metal’s technical content of this press release and quality assurance
of the exploration data and analytical results.

About Duluth Metals Limited

Duluth Metals Limited is committed to acquiring, exploring and
developing copper, nickel and platinum group metal (PGM) deposits.
Duluth Metals has a joint venture with Antofagasta plc on the Twin
Metals Project, located within the rapidly emerging Duluth Complex
mining camp in north-eastern Minnesota. 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. Aside from the joint venture, Duluth
Metals retains a 100% position on approximately 40,000 acres of mineral
interests on exploration properties adjacent to and nearby the Twin
Metals Minnesota LLC joint venture.

This press release contains forward-looking statements (including
“forward-looking information” within the meaning of applicable Canadian
securities legislation and “forward-looking statements” within the
meaning of the US Private Securities Litigation Reform Act of 1995)
relating to, among other things, the results of drilling operations of
Duluth Metals and exploration and mine development. Generally,
forward-looking statements can be identified by the use of words such
as “plans”, “expects” or “does not expect”, “is expected”, “budget”,
“scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or
“does not anticipate”, or “believes”, or variations of such words and
phrases or statements that certain actions, events or results “may”,
“could”, “would”, “might” or “will be taken”, “occur” or “be achieved”.
Duluth Metals has relied on a number of assumptions and estimates in
making such forward-looking statements, including, without limitation,
the prices of copper, nickel and platinum group metals (PGMs) and the
costs associated with continuing exploration and mining development.
Such assumptions and estimates are made in light of the trends and
conditions that are considered to be relevant and reasonable based on
information available and the circumstances existing at this time. A
number of risk factors may cause actual results, level of activity,
performance or outcomes of such exploration and/or mine development to
be materially different from those expressed or implied by such
forward-looking statements including, without limitation, whether such
discoveries will result in commercially viable quantities of such
mineralized materials, the possibility of changes to project parameters
as plans continue to be refined, the ability to execute planned
exploration and future drilling programs, possible variations of
copper, nickel and PGM grade or recovery rates, the need for additional
funding to continue exploration efforts, changes in general economic,
market and business conditions, and those other risks set forth in
Duluth Metals’ most recent annual information form under the heading
“Risk Factors” and in its other public filings. Statements related to
“reserves” and “resources” are deemed forward-looking statements as
they involve the implied assessment, based on realistically assumed and
justifiable technical and economic conditions, that an inventory of
mineralization will become economically extractable. Forward-looking
statements are not guarantees of future performance and such
information is inherently subject to known and unknown risks,
uncertainties and other factors that are difficult to predict and may
be beyond the control of Duluth Metals. Although Duluth Metals has
attempted to identify important risks and factors that could cause
actual actions, events or results to differ materially from those
described in forward-looking statements, there may be other factors and
risks that cause actions, events or results not to be as anticipated,
estimated or intended. Consequently, undue reliance should not be
placed on such forward-looking statements. In addition, all
forward-looking statements in this press release are given as of the
date hereof. Duluth Metals 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. The forward-looking statements
contained herein are expressly qualified by this disclaimer.

Cautionary Note to United States Investors Concerning Estimates of
Indicated and Inferred Mineral Resources

This press release uses the terms “Indicated Mineral Resources” and
“Inferred Mineral Resources” in accordance with the Canadian Institute
of Mining, Metallurgy and Petroleum (CIM) Definition Standards. While
such terms are recognized under Canadian securities legislation, the
United States Securities and Exchange Commission does not recognize
these terms. The term “Inferred Mineral Resource” refers to a mineral
resource for which quantity and grade or quality can be estimated on
the basis of geological evidence and limited sampling and reasonably
assumed, but not verified, geological and grade continuity. These
estimates are based on limited information and it cannot be assumed
that all or any part of an “Inferred Mineral Resource” will be upgraded
to a higher classification resource, such as “Indicated” or “Measured”,
as a result of continued exploration. Accordingly, an estimate relating
to an “Inferred Mineral Resource” is insufficient to allow meaningful
application of technical and economic parameters or to enable an
evaluation of economic viability. Under Canadian securities
legislation, estimates of an “Inferred Mineral Resource” may not form
the basis of feasibility or other economic studies. Investors are
cautioned not to assume that all or any part of an “Inferred Mineral
Resource” is economically or legally mineable. Investors are also
cautioned not to assume that all or any part of “Indicated” will ever
be converted into “Mineral Reserves” (being the economically mineable
part of an “Indicated” or “Measured Mineral Resource”).






SOURCE Duluth Metals Limited

Image with caption: “Figure 1 – Project Area Location, Bedrock Geology and Resources Map (CNW Group/Duluth Metals Limited)”. Image available at: http://photos.newswire.ca/images/download/20130320_C6455_PHOTO_EN_24669.jpg

Source: PR Newswire