ORBMINCO LIMITED — Interim / Quarterly Report 2018

Oct 25, 2018

Woomera Mining Limited

Suite 116 147 Pirie Street Adelaide SA 5000 admin@WoomeraMining.com.au

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26 October 2018

ASX Announcement

SEPTEMBER 2018 QUARTERLY ACTIVITIES REPORT

Highlights

Musgrave Province

• Exploration Licence EL 6180 (formerly EL5287 and SELA 2018/00042) granted

• A ground-based Moving Loop Electromagnetic (MLEM) 200m line spaced survey completed over the Cavanagh, Healy, Gallagher and Walsh geophysical targets

• Strong conductors recorded at Cavanagh, Gallagher, Healy and Walsh

• Two target areas (MacNamara and 2 lines at O’Mahony) remain to be surveyed on 200m line spacings

• MLEM station spacing over zones of anomalous conductivity will be reduced from 200m to 100m and potentially to 50m to further delineate causative bodies to fine tune drill hole locations

• Approximately 4,000m RC drilling program to commence following infill MLEM. Drilling is expected to commence early November 2018.

Pilgangoora

• ASTER data and GSWA mapping used to highlighted areas for follow-up mapping and sampling. Planning well underway for mapping and auger soil sampling program.

Labryinth

• Native Title Mining Agreement negotiations underway with Antakirinja MatuYankunytjatjara Aboriginal Corporation (AMYAC)

Nawa Project

• Exploration Licence EL 6246 (formerly ELA 2017/00183) granted

• Native Title Mining Agreement negotiations underway with Antakirinja MatuYankunytjatjara Aboriginal Corporation

Corporate

• Woomera Corporate Office changed to Suite 116, 147 Pirie Street Adelaide SA 5000

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1. Musgrave Province – Alcurra-Tieyon Project

During the period Subsequent Exploration Licence Application ELA 2018/00042 (formerly EL 5287) was granted as EL 6180 (Figure 1). EL 6180 is one of four tenements in the Company’s Alcurra-Tieyon Project in the Musgrave Province which is the subject of a previously documented Joint Venture with OZ Minerals Ltd.

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Figure 1 - Location of South Australian exploration licences

A major ground-based Moving Loop Electromagnetic (MLEM) survey commenced on 16[th] August 2018. The EM survey was expected to take around 6 weeks to complete. However, the requirement to acquire both Inloop and Slingram readings due to an elevated induced polarisation effect meant greater time was required to take readings at each station. A further delay was experienced when the geophysical crew were required to take a break and replenish liquid nitrogen supplies.

The MLEM survey is using state-of-the-art “SQUID” technology. Both Inloop and Slingram data has been acquired at 500 stations representing over 100 line kms of MLEM traverses (Figure 2).

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Figure 2 – MLEM survey locations

Data to date has been collected at 200m station spacing over Cavanagh, Walsh, Healy, Gallagher and part of O’Mahony. Preliminary plate modelling has identified strong conductors at all sites that correlate with the magnetic susceptibility models previously identified by the Company. Figure 3 shows the 3D modelling of the conductive body at Cavanagh and the proposed drill holes to drill test the conductor.

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Figure 3 - 3D model of conductive body modelled from the Slingram data

The geophysical crew is scheduled to return to site in early October 2018. The initial priority will be to conduct infill surveys at Cavanagh, Healy and Gallagher at 100m and potentially to 50m station spacing to provide sufficient data density to accurately delineate the conductors prior to drilling. The geophysical crew will then continue to complete the remaining survey lines at O’Mahony and MacNamara at 200m station spacing. It is anticipated that further infill to a 100m and potentially to a 50m spacing will be required at O’Mahony and MacNamara should the 200m surveys detect significant conductors.

The Program for Environment Protection and Rehabilitation (PEPR) was approved by the SA Department of Energy and Mining on 28 September 2018.

RC drilling is planned to commence on the Tieyon Station targets (Healy, Gallagher, Walsh and O’Mahony). Track, pad and sump preparation has been contracted with the drilling program scheduled to be completed early December 2018.

2. Pilgangoora

The Company’s three Pilgangoora Project tenements lie within the Pilbara Craton, between 60 kms and 110 kms south east from Port Hedland, within close proximity to the following world-class lithium pegmatite projects including:

• Pilbara Minerals: Mineral Resource of 156.3 Mt @ 1.25% Li2O and 128ppm Ta2O5 - ASX: PLS 25 January 2017;

• Altura Mining: Resource 40.3 Mt @ 1.0% Li20 - ASX: ALS announcement 30 Jan 2017.

• Wodgina Lithium Mine - Mineral Resource: Resource of 120 Mt @ 1.28% Li20 & 1.73% Fe203 - ASX: MIN announcement 28 April 2017.

Field reconnaissance including mapping, rock chip sampling and soil sampling will be conducted during Q4 2018. The area of focus will be the two northern tenements (E 45/4790 and E 45/4796) that lie within a structurally controlled corridor of monzogranite of the Carlindi Granitoid Complexes. Monzogranites in the area as referenced by the GSWA are known to be intruded by Sn-Ta-Li pegmatites (Figures 4, 5 & 6).

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E 45/4796
E 45/4790
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Figure 4 – E 45/4790 and E 45/4796 surface geology (after Triggs)

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Figure 5 – Interpreted TMI data showing magnetic monzoganites and interpreted pegmatite dykes

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Figure 6- Image showing Magpie Range Total Count radiometrics over Aster AlOH data. The Wodgina-Strelley lineament considered important in the control of lithium bearing pegmatites passes through E 45/4790

The sampling will also be conducted using a portable XRF. Whilst direct analysis of lithium is not possible with XRF due to X-ray physics limitations, the latest generation of instruments can be used effectively to identify a suite of whole rock and associated pathfinder elements, namely: K, Ca, Rb, Sr, Y, Nb, Sn, Cs, Ta, Sb, W, Bi, As, Ga, Tl, and the rare earth elements (REEs) of La and Ce.

Soil sampling will also be undertaken in areas where the field mapping indicates potential pegmatites under cover.

3. Labryinth Project

EL 6134 (formerly EL 5133) covers 266 km[2] and is located approximately 60 kms north-east of Tarcoola in South Australia.

This tenement is located within the Woomera Prohibited Area (WPA) and is subject to a co-existence model between the Department of Defence and various non-Defence sectors (including the resource sector). EL 6134 is located within the “Infrequent Defence Use” exclusion zone (Green Zone) in which new non-Defence users will have a presumption of access; however, they can be excluded for up to 56 days a year if required.

EL 6134 is covered by the Antakirinja Matu-Yankunytjatjara Native Title Claim Group. The Company has initiated contact with the Native Tile Claimants with a view to completing a Native Title Mining Agreement (NTMA) during Q4 2018.

Once the NTMA is signed, the Company will notify the Department of Defence of its intention to conduct an on-country Heritage Survey as a precursor to drilling.

A 3D magnetic and gravity inversion model indicates the Lake Labyrinth Prospect coincident magnetic and gravity body has a footprint of 1.2 kms by 0.5 km. The model also shows that the historic drill hole DD88ME-2 which reported trace pyrite, chalcopyrite and pyrrhotite throughout the 308m hole, narrowly missed the predicted body (Figure 7). The validity of this 3D geophysical inversion has been reviewed and verified by an independent consulting geophysicist (Blundell, 2017).

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Figure 7: Lake Labyrinth Prospect 3D magnetic/gravity inversion model relative to historic drill hole DD88ME-2. Red: VRMI, Orange: Gravity, Yellow: CRA drill hole.

4. Nawa Project

EL 6246 hosts coincident magnetic and gravity anomalies (Figure 8) that extend for approximately 12 kms in an area dominated by metasediments and ironstone. Previous exploration by BHP concluded that the underlying rocks are part of the Mount Woods complex, the same rock suite that hosts Prominent Hill.

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Figure 8 – EL 6246 Magnetic intensity

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EL 6246 Gravity

Woomera conducted 3D magnetic and gravity inversion using data published by the Geological Survey of South Australia to produce the model shown in Figure 9.

Woomera has initiated negotiations with the Antakirinja Matu-Yankunytjatjara Aboriginal Corporation (AMYAC) with the aim of executing a Native Title Mining Agreement needed in order to undertake exploration activities.

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Figure 9 – Green: Magnetic susceptibility and Brown: Density contrast

4. Tenement Status

The Company’s key assets include 21 tenements and tenement applications covering 6,598km[2] in the Gawler Craton and Musgrave Province in South Australia, as well as Pilbara and South East Yilgarn areas in Western Australia.

The current status of the Company’s tenement holding is set out below.

South Australian Granted Tenements

Tenement Name	Number	Location	Area (km²)	Expiry/next renewal date	Holder
Sundown	EL 6091	Musgrave Province	768	10 October 2018	WEX
Mount Howe	EL 6092	Musgrave Province	854	10 October 2018	WEX
Mount Irwin	EL 6180	Musgrave Province	503	24 June 2019	Norsa
Tieyon Station	EL 6090	Musgrave Province	938	11 January 2019	WEX
Mount Carulinia	EL 6133	Gawler Craton	401	10 October 2018	WEX
Whymlet	EL 6134	Gawler Craton	266	28 November 2018	WEX
Tallaringa	EL 6246	Gawler Craton	437	29 November 2018	WEX

South Australian Applications for New Tenements

Tenement Name	Number	Location	Area (km²)	Status	Notes
Great Central Desert	ELA 2012/00119	Gawler Craton	929	Application	Application by Norsa.
Great Victorian Desert	ELA 2012/00120	Gawler Craton	848	Application	Application by Norsa.

Western Australian Granted Tenements

WML’s tenements are held by Volt Lithium Pty Ltd and Liquid Lithium Pty Ltd which are wholly owned subsidiaries of Woomera Mining Limited.

Tenement Name	Number	Location	Area (km²)	Status	Expiry Date	Notes
Magpie Range Pilgangoora	E45/4790	Central Pilbara	64	Granted	6 June 2022	Volt Lithium
Peak Charles Salt Lake	E74/596	SE Yilgarn	92	Granted	3 May 2022	Volt Lithium
Mt Cattlin East	E74/597	SE Yilgarn / Ravensthorpe	56	Granted	3 January 2022	Volt Lithium
Lake Dundas	E63/1804	SE Yilgarn/ Norseman	57	Granted	30 April 2022	Liquid Lithium
Lake Sharpe	E74/598	SE Yilgarn	60	Granted	27 April 2022	Liquid Lithium
Mt. Cattlin East West	E74/599	SE Yilgarn / Ravensthorpe	40	Granted	17 January 2022	Liquid Lithium
Magpie Range West	E45/4796	Central Pilbara	29	Granted	4 July 2022	Liquid Lithium
Lake Cowan	E15/1532	SE Yilgarn/Norseman	3	Granted	4 May 2022	Liquid Lithium

Western Australian Applications for New Tenements

Tenement Name	Number	Location	Area (km²)	Status	Notes
Turner Siding Pilgangoora	E45/4789	Central Pilbara	57	Application	Volt Lithium
Dumbleyung Salt Lake	E70/4870	SE Yilgarn	86	Application	Volt Lithium
Binneringie	E15/1652	SE Yilgarn/Norseman	51	Application	Woomera Mining Ltd
Mt Cattlin	E74/632	Ravensthorpe	37	Application	Woomera Mining Ltd

5. December Quarter Exploration Plan

The Exploration Plan for the three months ending 30 December 2018 is:

Musgrave Alcurra-Tieyon Project

• Complete the 200m spaced ground based Moving Loop Electromagnetic Survey over the MacNamara, and O’Mahony.

• Infill the EM to 100m and potentially to 50m spaced stations over the Cavanagh, Healy, Gallagher and Walsh conductors.

• Complete approximately 4,000m of RC drilling to test the conductors identified in the EM survey.

Pilgangoora

• E45/4790 and E45/4796 lie within a structurally controlled corridor of monzogranite of the Carlindi Granitoid Complex. Monzogranites in the area as referenced by GSWA are known to be intruded by mineralised Sn-Ta-Li pegmatites. WML has Heritage Agreements in place.

• Field work will consist of mapping, rock chip sampling and soil sampling of areas within EL 45/4790 and EL 45/4796 where pegmatites may occur.

Labryinth Project

• The Labryinth Project occurs within the Gawler Craton and lies approximately 30 km north-west of Kingoonya. Previous drilling by CRAE (DD88ME2) intersected weathered basement at 69 metres and disseminated pyrite, chalcopyrite and pyrrhotite throughout the entire hole to 308m depth.

• The tenement is covered by the Antakirinja Matu-Yankunytjatjara Native Title Claim. WML has contacted the lawyers for the Native Title Claimants and initiated communications relating to completing a Native Title Mining Agreement (NTMA).

• Once the NTMA has been signed Woomera will notify the Department of Defence as required under the conditions of WEX’s Resource Exploration Permit (granted for a 7-year term expiring March 2022) of its intent to undertake an on-country Cultural Heritage Survey as a precursor to drilling.

Cowan

• The Company has a number of granted tenements in the SE Yilgarn of Western Australia that fall within the Ngadju Native Title Determination Area.

• All of the Company’s granted tenements within the Determination Area are the subject of signed Standard Heritage Agreements.

• E15/1652 is a tenement application and will require a Heritage Agreement before the application can become a granted tenement.

• The Company is in discussion with the lawyers representing the Ngadju regarding a new heritage agreement.

Mt Cattlin Project

• WML’s tenure lies close to Galaxy’s Mt Cattlin Spodumene Mine containing a Resource of 16Mt @ 1.08% Li2O and 5.2 Mlbs Ta2O3 (ASX: GXY 2 June 2017). The Native Title claimant groups are the South Noongar (WC 1996/109) and Wagy Kaip (WS 1998/070). WML will contact local freehold farmers aiming to negotiate access to conduct auger soil sampling.

COMPETENT PERSONS STATEMENT

The exploration results reported herein, insofar as they relate to mineralisation, are based on information compiled by Mr Gerard Anderson, Managing Director of Woomera Mining Limited. Mr Anderson is a Member of the Australasian Institute of Mining and Metallurgy who has over forty-two years of experience in the field of activity being reported. Mr Anderson has sufficient experience which is relevant to the styles of mineralisation and types of deposit under consideration and to the activity that he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’ relating to the reporting of Exploration Results. Mr Anderson consents to the inclusion in the report of matters based on his information in the form and context in which it appears.

For further information contact:

Gerard Anderson Peter Taylor Managing Director Investor Relations Woomera Mining Limited 0412 036 231 Peter@nwrcommunications.com.au

About Woomera Mining Limited

Woomera Mining Limited (Woomera) is an ASX listed exploration company based in Adelaide, South Australia with an extensive minerals tenement portfolio prospective for Copper, Lithium, Gold, Uranium, Iron Ore, Nickel and Cobalt. The Woomera tenement package includes four tenements in the Musgrave Province of South Australia with several drill ready targets ( Musgrave Project ) which is the subject of a binding Heads of Agreement with Oz Minerals (ASX: OZL) where Oz Minerals can elect to expend up to $7.5m in exploration to gain up to 75% of the Joint Venture in the Musgrave Province with Woomera. Five tenements make up the Gawler Craton package ( Gawler Craton Project ) which are prospective for IOCGU deposits, Cu-Ni-Co deposits, RE and Precious Metals. Woomera’s tenement portfolio also includes 8 granted tenements and two tenement applications including 3 tenements in the Pilbara region of WA ( Pilgangoora Lithium Project) , 2 lithium tenements and one tenement application near Ravensthorpe ( Mt Cattlin Lithium Project), 1 lithium tenement and 1 tenement application near Lake Cowan and several WA lithium brine prospects over Lakes Tay, Sharpe, Dundas and Dumbleyung ( Lakes Lithium Projects ).