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TriAusMin Ltd
Symbol TOR
Shares Issued 251,389,050
Close 2013-05-09 C$ 0.05
Market Cap C$ 12,569,453
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TriAusMin drills 32 m of 4.6% Zn at Woodlawn

2013-05-09 09:40 ET - News Release

Mr. Wayne Taylor reports

TRIAUSMIN DISCOVERS SIGNIFICANT NEW HIGH-GRADE BASE METAL ZONE AND CONFIRMS CONTINUITY OF I & D LENSES AT THE WOODLAWN DEPOSIT

TriAusMin Ltd. has discovered of a new high-grade base metal zone grading 4.6 per cent zinc, 1.8 per cent copper, 1.2 per cent lead, 22 grams per tonne Ag and 0.6 g/t Au over 32 metres, including 9.0 metres grading 16.1 per cent Zn, 2.0 per cent Cu, 4.0 per cent Pb, 52 g/t Ag and 0.8 g/t Au, as well as, confirming the continuity of the high-grade I & D lenses intersected in the 2012 drill program on its 100-per-cent-owned Woodlawn mine project in New South Wales Australia.

TriAusMin's chief executive officer Wayne Taylor commented: "The discovery of this new high-grade sulphide lens confirms the potential for material additions to the existing 8.6-million-tonne indicated and 1.5-million-tonne inferred resource base at Woodlawn in an area immediately adjacent to the existing underground mine workings. This, together with the establishment of continuity of the I & D lenses adjacent to the existing mine workings, is expected to lead to the reopening of the Woodlawn mine and for TriAusMin to establish itself as a profitable producing mining company in the near term."

Highlights

New discovery -- hole WLTD015

  • 32.0 metres at 1.8 per cent Cu, 1.2 per cent Pb, 4.6 per cent Zn, 22 g/t Ag, 0.6 g/t Au from 377 m;
  • Including -- 9.0 m at 2.0 per cent Cu, 4.0 per cent Pb, 16.1 per cent Zn, 52 g/t Ag, 0.8 g/t Au from 400 m.

I lens intersection -- hole WLTD014W1

  • 7.7 m at 3.0 per cent Cu, 0.1 per cent Zn, seven g/t Ag, 0.3 g/t Au from 542 m.

D lens intersection -- hole WLTD014W1

  • 11.1 m at 0.9 per cent Cu, 3.6 per cent Pb, 8.3 per cent Zn, 61 g/t Ag, 0.5 g/t Au from 675 m.

Woodlawn 2013 underground drilling program

In 2012 TriAusMin carried out a drilling program to expand the high-grade resources at the past-producing Woodlawn mine. This program successfully extended the high-grade I, D, J and B sulphide lenses below the existing mine workings and support an exploration target of six million to seven million tonnes of high-grade mineralization in the first 200 metres below the existing underground infrastructure.

On the basis of the high-grade mineralization intersected in the 2012 drilling program, TriAusMin initiated a 2,900-metre drill program in February, 2013, designed to assist in expanding the resource base, establish the continuity of I and D lenses and to test a new geophysical anomaly which was interpreted to represent a new sulphide lens in the area immediately adjacent to the existing mine workings.

(1) The exploration target is conceptual and, to date, there has been insufficient exploration to define a mineral resource and it is uncertain if further exploration will result in the determination of a mineral resource. The exploration target assumes the continuation of down-dip mineralization and is based on the historical mine production (13 million tonnes at 9.8 per cent Zn, 1.6 per cent Cu, 3.6 per cent Pb, 74 g/t Ag and 0.52 g/t Au) and the remaining measured, indicated and inferred resource (10 million tonnes at 10.2 per cent Zn, 1.8 per cent Cu, 4.0 per cent Pb, 84 g/t Ag and 0.51 g/t Au) to the 2,150 m RL.

To date, holes WLTD014, WLTD014W1 and WLTD015 have been completed and assay results received. Hole WLTD016 was halted at 301 metres due to hole deviation and hole WLTD017 is still being drilled. Significant results from the completed holes are summarized in the attached table.

NEW RESULTS -- SIGNIFICANT MINERALIZED INTERCEPTS IN DRILL HOLES 
           WLTD014, WLTD014W1 AND WLTD015(a)

WLTD014   From    To   Interval   Cu    Pb     Zn    Ag    Au 
            m      m       m       %     %      %    g/t   g/t 

I lens      534   540     6.0     1.55  0.02   0.31   4.2  0.23
            584   585     1.0     0.12  2.16   3.44  21.7  0.29
D1 lens     656   657     1.0     0.96  9.71  18.35  93.3  0.91
D2 lens   665.8 666.7     0.9     1.84  7.25  12.50   154  1.09

WLTD014W1 From    To   Interval   Cu    Pb     Zn    Ag    Au 
            m      m       m       %     %      %    g/t   g/t 

H/W zone   522    523     1.0     1.42  0.19   2.15  6.8  0.58
I lens   542.0  549.7     7.7     3.02  0.02   0.08  6.6  0.28
D lens   674.9    686    11.1     0.87  3.64   8.28 61.2  0.45
           689    690     1.0     0.14  0.18   2.59  4.2  0.12

WLTD015   From    To   Interval   Cu    Pb     Zn    Ag    Au 
            m      m       m       %     %      %    g/t   g/t 

         266.2  266.6     0.4     2.63  0.10   1.30  13.9  0.32
         318.9  319.4     0.5     0.43  2.48   4.51  13.0  0.17
           322    323     1.0     0.37  2.02   2.59   9.7  0.15
           353    354     1.0     0.20  0.01   4.01   0.6  0.10
New        377    409    32.0     1.81  1.15   4.58  21.9  0.58
discovery                                                             
lens                                                                
incl.      377    398     21.0    1.90  0.04   0.09   9.9  0.52
incl.      400    409      9.0    2.01  4.00  16.07  52.2  0.84

Note: Intercepts were calculated by the conversion of contained 
      metal multiplied by U.S. dollar metal prices: Zn $2,204 per
      ton, Pb $2,204/t, Cu $8,300/t, Au $1,650/ounce and Ag $32
      per ounce. Intercepts were then calculated by using a 
      weighted average lower cut-off value of $100 for contained 
      metal, with a maximum of two m consecutive internal waste. 
      Higher grade intercepts are calculated on a $100 lower cut, 
      with a weighted average value of more than $500.

Holes WLTD014 and WLTD014W1 intersected both the I and D lenses as planned and confirmed the continuity of these lenses up plunge from the high-grade mineralization intersected in the 2012 drill program toward the previously defined resources outlined during the former mining operations. These results add support to the potential for establishing additional resources in both the I and D lenses that could be easily accessed from the existing underground infrastructure and available for mining upon reaccessing the mine workings. The I and D lenses remain open both at depth and along strike where additional resources are expected to be defined.

Hole WLTD015 was designed to test an electromagnetic conductor identified by a downhole EM survey carried out as part of the 2012 drill program. This anomaly was located in the area adjacent to the old mine workings and had no previous drilling into it. High-grade mineralization over a significant core length of 32 m (estimated true thickness of 25.4 metres) was encountered in this drill hole and indicates that a new high-grade sulphide lens has been discovered in the immediate area of the existing mine infrastructure. The size and ultimate grade of this new discovery remain to be determined, however should a material resource be defined it would be readily developed for production upon reaccessing the mine and add to the existing significant high-grade resources in and around the existing mine infrastructure.

Woodlawn project background

The Woodlawn project is based at the former Woodlawn mine site located 30 kilometres south of Goulburn and 200 kilometres southwest of Sydney, where the company holds two significant polymetallic resource-based assets: the Woodlawn underground project (WUP) and the Woodlawn retreatment project (WRP).

When in production (1978 to 1998), the Woodlawn open pit and underground mine produced approximately 13.4 million tonnes of high-grade zinc, lead and copper ore from a number of separate, fault-bounded massive sulphide zones mined to a maximum depth of 630 metres below surface (only selected lenses were mined to this level). An indicated resource (b) of 8.6 million tonnes grading 10.28 per cent Zn, 4.00 per cent Pb, 1.8 per cent Cu, 84 g/t Ag and 0.5 g/t Au as well as 1.5 million tonnes of inferred resources (b) at an average grade of 9.6 per cent Zn, 4.1 per cent Pb, 1.7 per cent Cu, 87 g/t Ag and 0.6 g/t Au previously released by the company, exist within and around the historic operations.

The WUP is focused on the re-establishment of mining operations at the past-producing Woodlawn mine and expanding the resource base to sustain a mining operation for over 10 years of operations.

The WRP has established an existing tailings reserve that can be reprocessed on a stand-alone basis that provides a 23-per-cent after-tax return on the capital development costs. The tailings contain a reserve (c) of 11.2 million tonnes grading 2.2 per cent Zn, 1.3 per cent Pb, 0.5 per cent Cu, 31 g/t Ag and 0.3 g/t Au. On March 22, 2012, the company announced its intention to proceed with the development of the WRP as a result of a detailed metallurgical, engineering and costing study, and supported by a strongly positive business case.

TriAusMin is currently evaluating its options to finance the establishment of mining operations at Woodlawn including the options of developing the WRP as a stand-alone operation as well as the combined WUP plus WRP that brings significant capital cost benefits.

Competent person/qualified person

(a) The technical information in this news release relating to the exploration results at the Woodlawn project is based on information compiled by Rod Arnold, who is a member of the Australasian Institute of Geoscientists. Mr. Arnold is a full-time employee of TriAusMin and has sufficient experience, which is relevant to the style of mineralization and type of deposit under consideration and to the activity which he is undertaking, to qualify as a competent person as defined in the 2004 edition of the "Australasian code for reporting of exploration results" and qualified person as this term is defined in Canadian National Instrument 43-101. Mr. Arnold consents to the inclusion in this news release of the information in the form and context in which it appears.

(b) The technical information in this news release relating to the Woodlawn mineral resources is based on information compiled by Robin Rankin, who is a member of the Australasian Institute of Mining and Metallurgy (AusIMM) and accredited by the AusIMM since 2000 as a chartered professional (CP) in the geology discipline. Mr. Rankin is a consultant to TriAusMin as principal consulting geologist of independent geological consultancy GeoRes. He has sufficient experience, which is relevant to the style of mineralization and type of deposit under consideration and to the activity which he is undertaking, to qualify as a competent person as defined in the 2004 edition of the Australasian code for reporting of exploration results and qualified person as this term is defined in Canadian National Instrument 43-101. Mr. Rankin consents to the inclusion in this news release of the information in the form and context in which it appears.

(c) The information in this release that relates to mineral resources or ore reserves associated with the Woodlawn retreatment project is based on information compiled by qualified person, Richard Lambert, PE, a professional engineer and registered member of SME. Mr. Lambert is principal mining engineer and executive vice-president of Roscoe Postle Associates Inc. He is independent of TriAusMin applying the test set out in Section 1.4 of NI 43-101. He has sufficient experience relevant to the style of mineralization and type of deposit under consideration, and to the activity which he is undertaking, to qualify as a competent person as defined in the 2004 edition of the Australasian code for reporting of exploration results, mineral resources and ore reserves (the JORC code) and by reason of his education, affiliation with a professional association (as defined in NI 43-101) and past relevant work experience, fulfills the requirements to be a qualified person for the purposes of NI 43-101.

Assay sampling information

HQ and NQ drill core was half-cored on site and submitted to ALS Laboratories Orange. Gold analyses were completed using a 50 g charge fire assay with an AA finish (method Au-AA22) and base metals completed using aqua-regia digest with an ICP finish (method ME-ICP41). Overrange samples were reassayed by ore grade methods. Certified standards are routinely inserted into every sample batch for quality assurance/quality control purposes.

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