ORBMINCO LIMITED — Board/Management Information 2018

Aug 21, 2018

Woomera Mining Limited

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

22 August 2018

ASX Announcement

NOTICE OF CHANGE OF AUDITOR

Woomera Mining Limited (ASX: WML, the Company ) advises that the Australian Securities and Investments Commission ( ASIC ) has consented to the resignation of the Company’s auditor, BDO Audit (WA) Pty Ltd, effective from the date of this notice.

In accordance with ASIC Regulatory Guide 26, paragraphs RG 26.59-RG 26.61, the Company provides the following information:

The outgoing auditor is:

BDO Audit (WA) Pty Ltd

38 Station Street Subiaco WA 6008 The incoming auditor is: BDO Audit (SA) Pty Ltd Level 7, 420 King William Street

Adelaide SA 5000

The reason for the change of auditor is order for the Company to have a locally based auditor in close proximity to its registered office. The Company will table a resolution seeking to ratify the appointment of BDO Audit (SA) Pty Ltd at the 2018 Annual General Meeting.

Jonathan W. Lindh

Company Secretary Woomera Mining Limited

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 near Ravensthorpe ( Mt Cattlin Lithium Project) and several WA lithium brine prospects over Lakes Tay, Sharpe, Dundas, Cowan and Dumbleyung ( Lakes Lithium Projects).