TASMAN MINING

Blackwater Gold MineREDEVELOPMENT OF A HIGH-GRADE, LONG LIFE GOLD MINE

TASMAN MINING 2BLACKWATER GOLD MINE

DisclaimerThis presentation has been prepared by Tasman Mining Limited (Tasman) and consists of written materials/slides for a presentation concerning Tasman and the Blackwater Gold Project. By reviewing/attending this presentation, you agree to be bound by the following conditions.

No representation or warranty, express or implied, is made as to the fairness, accuracy, or completeness of the information, contained in the presentation or of the views, opinions and conclusions contained in this material. To the maximum extent permitted by law, Tasman and its related bodies corporate and affiliates, and its respective directors, officers, employees, agents and advisers disclaim any liability (including, without limitation any liability arising from fault or negligence) for any loss or damage arising from any use of this material or its contents, including any error or omission there from, or otherwise arising in connection with it.

Some statements in this presentation are forward-looking statements within the meaning of the US securities laws. Such statements include, but are not limited to, statements with regard to capacity, future production and grades, projections for sales growth, estimated revenues and reserves, targets for cost savings, the construction cost of new projects, projected capital expenditures, the timing of new projects, future cash flow and debt levels, the outlook for minerals and metals prices, the outlook for economic recovery and trends in the trading environment and may be (but are not necessarily) identified by the use of phrases such as “will”, “expect”, “anticipate”, “believe” and “envisage”. By their nature, forward-looking statements involve risk and uncertainty because they relate to events and depend on the circumstances that will occur in the future and may be outside Tasman’s control. Actual results and developments may differ materially from those expressed or implied in such statements because of a number of factors, including levels of demand and market prices, the ability to produce and transport products profitably, the impact of foreign currency exchange rates on market prices and operating costs, operational problems, political uncertainty and economic conditions in relevant areas of the world, the actions of competitors, activities by governmental authorities such as changes in taxation or regulation.

Given these risks and uncertainties, undue reliance should not be placed on forward-looking statements which speak only as at the date of the presentation. Subject to any continuing obligations under applicable law or any relevant stock exchange listing rules, Tasman does not undertake any obligation to publicly release any updates or revisions to any forward looking statements contained in this presentation, whether as a result of any change in Tasman’s expectations in relation to them or any change in events, conditions or circumstances on which any such statement is based.

Certain statistical and other information included in this presentation is sourced from publicly available third party sources and has not been independently verified.

All figures are expressed in US dollars unless stated otherwise.

TASMAN MINING 2

TASMAN MINING 3BLACKWATER GOLD MINE

About Tasman MiningTasman Mining was established by Mark Le Messurier with the purpose of building a new gold miner.

Strategic approach in securing Blackwater as first cornerstone asset

Intention of building a portfolio of development / production assets

Target assets with barriers to development & bring high calibre management, an agile development approach and funding ability

Currently privately held with potential for IPO in 1 – 3 year timeframe

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Managing Director

Mark Le Messurier

Mark is a mining engineer and executive with 37 years of experience in hard rock base metal and precious metal mining. He most recently served as the Chief Operating Officer of Evolution Mining for six years from its foundation in 2011, a leading Australian gold miner with a current market capitalisation of approximately AUD$6bn. Mark has extensive experience in building and operating modern, underground and open pit mining operations. Previous employers included Rio Tinto WMC Barrick and Sinogold.

37 years international experience in hard rock base and precious metal mining

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Blackwater Foundation AssetPROJECT OVERVIEW

Located 20km south of Reefton on the west coast of New Zealand’s South Island

High grade (23 g/t), underground, narrow vein gold mine that produced approximately 730koz from 1908 – 1951

More than US$13M invested in exploration and development studies

Located in region with long mining history and supportive of new economic development

Westport

Reefton

BLACKWATER

Nelson

GOLDEN BAY

Reefton

NEW

ZEALAND

Greymouth

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Agreement to Acquire BlackwaterBLACKWATER GOLD PROJECT

OGC has held the Blackwater project since 2003

OGC determined Blackwater is a non-core asset

In July 2018, Tasman finalised the right to purchase Blackwater

Basic terms of the OceanaGold agreement:• OGC provides Tasman with US$5M in seed funding to support strategy • Tasman to manage the project with OGC to provide technical assistance in New Zealand • Tasman to secure funding to complete decline access within 18 months • Tasman to construct decline access, complete reserve infill drilling, and economic evaluation• Tasman has exclusive right to purchase Blackwater at a Decision to Mine

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Blackwater Drilling by OGCCOMPLETED BY OCEANAGOLD 2011 - 2013

• Six holes intersected high-grade mineralisation and confirmed the depositcontinues at depth

• All holes intersected gold mineralisation • Gold intersected 650m below the base of

historical workings• Best drill results included:

• WA21A : 0.5m at 23.3g/t Au

• WA22D : 1.0m at 85.2g/t Au

• WA11A : 0.5m at 59.7g/t Au

• WA25A : 0.5m at 134.0g/t Au

• WA25 : 0.3m at 62.4g/t Au

500m

0m

-500m

-1000m

Birthday Reef Projection Resource Estimate (Updated 2013)

Historical Production:1.6Mt @14.6g/t for 740,000 oz

WA11 & WA11A

WA21A

WA22C & WA22D

WA25

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Blackwater Development StrategyDevelopment of a 3.3km underground twin decline to the base of historic workings

• Resource consents in place for decline development

• Estimated cost of US$30 million

Establishment of drill chambers and drives, completion of drill program and completion of feasibility studies to underpin a Decision to Mine

Mining Permit application was submitted by OceanaGold in July 2018 and approval expected within 18 months

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Preliminary Economic AssessmentCOMPLETED BY OGC IN 2014

• Development is environmentally, technically and economically viable

• Production of 570koz over initial 10 years mine life

• Average production of 50-60koz at an all-in sustaining cost of US$635/oz

• Inferred resource (JORC 2012) of 0.9Mt grading 23g/t gold for 700koz

• Processing 119ktpa with a mined grade of 16g/t and gold recovery of 96%

Preliminary economic assessment completed by OGC concluded:

Potential for first gold production by 2023

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FinancialCOST

$30m $27m $154/t $42/tMining

Total Capital$154m $254mProcessing

Project capital$76m

LOM sustaining capital$78m

Mining Milling

G&A$21/t

Total$217/tTotal Operating

Royalties$30m

Capital & Operating$407m

Free cash flow pre tax$303m

Post tax$214m

Tax$89m

AISC$635an ounceRevenue

$1300Gross Revenue$740m/oz

(570koz)

FinancialPROJECTION

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Key Outcomes Development and Drill Phase

Geotechnical, resource is 400 to 1200 metres below portal level, the decline development and drilling will provide the best information on ground conditions

Resource drilling, current inferred model based on mining history and six intercepts, by developing decline and drill platform this provides the optimal means of determining resource potential

Mining method, drilling from UG will provide data however long hole bench stoping will be the preferred method

Dewatering, steady state inflow was 2 l/s, water to be pumped from historical mining voids

Permitting, revision of resource consent required for plant and tailings dam

400 m

1200 m

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Opportunities & Value AddResource upside, along strike beyond bounding fault structures, and down plunge

Mining, implement small scale bench stoping using appropriate mobile fleet

Processing, placement of processing plant UG removing ore haulage costs

Materials handling and mobile fleet electric rather than diesel

Continuous miner for decline development, proven technology, improving speed of development and lowering cost

The decline may intersect mineralisation and provides a good platform for further exploration

Decline construction will employ 30 people and when the mine is operating 100 people

Utilise ore sorting technology

Use of tailings for pastefill, improving ore recovery and stope stability, and reducing tailings storage requirements

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Mining at BlackwaterAPPLYING MODERN TECHNIQUES TO A SUCCESSFUL HISTORIC MINE

• Maximise productivity and utilise modern narrow vein mining equipment

• Proposed mining method uphold bench stoping• Preferred alternative to airleg mining

Ore driving

Long hole drilling

Stope Bogging

STOPED AND FILLED AREA

FILL

ED

A

REA

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High Quality JurisdictionFAVOURABLE OPERATING ENVIRONMENT

• New Zealand is a first world jurisdiction with a long history of gold mining, including at Blackwater

• West coast of New Zealand’s South Island has a well established mining and quarrying industry

• Strong legislative framework with clear policies and institutions

• Low sovereign risk environment

• Approvals processes well understood and projects regularly approved

• Blackwater permitting substantially advanced

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SummaryOUR STRENGTH

High grade deposit History of

confirmed deposits extension

Exclusive Rights Agreement in place between Tasman Mining and OceanaGold for project development and acquisition by Tasman Mining

Proven and experienced Tasman Mining management team

Project is in a Tier One country and

23g/tsuccessfulmining

Deep drilling

Exploration and Resource Consent permits in place

HISTORICAL MINED ORE BODY

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SummaryOUR STRENGTH

application process underway

Time frame for production

Gold recovery is high at

Estimated resource 700,000 ounces, cost to advance project to reserve status US$30m or $42 perresource ounce

The positive feasibility study completed by OceanaGoldin 2014 concluded the mine would produce

Decline development provides platform for resource growth

Community is

Mining Permit

years5 96%

570 koz

Opportunities to maximise project potential using latest technology

supportiveof development

over 10 years at a low cost of AISC US$635 an ounce